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单选题
There are（）rats on board.
A
not
B
no
C
any
D
none
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更多 “单选题There are（）rats on board.A notB noC anyD none” 相关考题
考题
The disinfection of various compartments in a vessel by filling with a gaseous agent to destroy rats and all insects pests which act as germ carriers means ______.A.fumigationB.dischargingC.CompensationD.displacement
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We will inform. you of the result ____ the program is approved by the board.
A、in order thatB、as ifC、even thoughD、as soon as
考题
The bus ( ) and stopped to allow the passenger to get on board.
A.drew toB.slowed downC.came uponD.close to
考题
The certificate of pratique certifies that ______.A.the ship has no rats or mice on boardB.no quarantinable disease has been found on the vesselC.no person has died during the voyage the ship has just completedD.all the crew members have no health problem
考题
I’m on fire and have dangerous cargo on board. The most emergent assistance in this case would be______．A.MedicineB.life boatC.helicopterD.firefighting
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共用题干
Are You Getting Enough Sleep?What happens if you don't get enough sleep? Randy Gardner,a high school student in the United States,wanted to find out. He designed an experiment on the effects of sleeplessness for a school science project. With doctors watching him carefully,Gardner stayed awake for 264 hours and 12 minutes.That's eleven days and nights without sleep!What effect did sleeplessness have on Gardner? After 24 hours without sleep,Gardner started havingtrouble reading and watching television. The words and pictures were too blurry（模糊）.By the third day,he was having trouble doing things withhis hands. By the fourth day, Gardner was hallucinating（产生幻觉）.For example,when he saw a street sign,he thought it was a person.He also imagined he was a famousfootball player. Over the next few days, Gardner's speech became so slurred（不清楚）that people couldn't understand him.He also had trouble remembering things.By the eleventh day, Gardner couldn't pass acounting test.In the middle of the test he simply stopped counting.He couldn't remember what hewas doing.When Gardner finally went to bed,he slept for 14 hours and 45 minutes.The second night he slept for twelve hours,the third night he slept for ten and one-half hours,and by the fourth night,he had returned tohis normal sleep schedule.Even though Gardner recovered quickly,scientists believe that going without sleep can be dangerous. They say that people should not repeat Randy's experiment. Tests on white rats have shown how serious sleeplessness can be. After a few weeks without sleep, the rats started losing their fur（皮毛）.And even though the rats ate more food than usual,they lost weight.Eventually the rats died.During your lifetime,you will probably spend 25 years or more sleeping.But why?What is the purpose of sleep? Surprisingly,scientists don't know for sure.Some scientists think we sleep in order to replenish（补充）brain cells. Other scientists think that sleep helps the body to grow and to relieve stress. Whatever the reason,we know that it is important to get enough sleep.Going without sleep is not dangerous for white rats.A:RightB:WrongC:Not mentioned
考题
共用题干
第二篇Exercise and BrainJust as exercise strengthens the heart and lungs,bones and muscles,it may also power up the brain.A succession of scientific studies of animals implies that physical activity has a positive effect on mental functioning."It's clear that the brain benefits from exercise,"says brain scientist William Greenough of the University of Illinois at Urbana-Champaign.His studies with rats have demonstrated two primary effects of activity:Vigorous physical exercise provides the brain with more fuel,and skill-based ex-ercise increases the formation of connections in the brain, which, according to the proposals of some scientists,may make the brain better able to process information.In one experiment,laboratory rats were separated into three groups.One group was exercised by running inside an automatic wheel,a second group improved their skills in a complicated obstacle course,and a third group was inactive."The animals that learned to go through the obstacle course exhibited a greater number of brain connections than the animals in the exercised or inactive groups,"Greenough said."In contrast, the animals that exercised inside the automatic wheel possessed a greater density of blood vessels in the brain than did either of the other two groups of animals."Learning a new dance step may boost the brain in the same way that learning a language can, he says.And if the dance is a good physical exercise as well,the benefits multiply.Young brains may be especially able to boost brain power through exercise,suggested another of Greenough's experiments that showed the most significant changes in the brain occurred among rats that had been exercised when very young.And while animals aren't people,he says it is logical to make the inference that an effect found in rats may also apply to humans.Human studies have focused primarily on older adults and suggest that regular exercise can improve the speed with which the brain processes information.Measurements made by Arthur Kramer at the University of Illinois demonstrated that inactive adults,aged 63 to 82,could hit buttons faster in response to a tone after they went through a 10-week water exercise course.A corresponding control group that didn't exercise showed no improvement.Which statement is correct according to the passage?A:The effect of exercises found in rats can not apply to people.B:Changes in the brain occurred among young rats are more significant than those among adult rats.C:Regular exercise can only improve the speed with which the older adults' brain processes information.D:The author encourages people do more skill-based exercise instead of vigorous physical exercise.
考题
共用题干
第三篇Sugar Accelerate the Process of AgingSugar is widely used in our daily life to make food and drinks sweet,though too much intake of it may lead to diabetes.However,today's study found it also makes people get old faster. Rats that eat high levels of a natural sugar known as fructose seem to age faster than other rats.And the same could be true for people who eat too much sweet junk food,said Israeli researchers.Fructose,a substance found naturally in honey and fruit,is used widely in foods ranging from soft drinks to yogurt. But while its sweet taste is popular,the sugar could cause wrinkles and health problems,the researchers said.Dr. Moshe Werman and Boaz Levi of the Technion-Israel Institute of Technology fed large amounts of fructose to laboratory rats.Writing in the Journal of Nutrition,they said the fructose-fed rats showed changes in the collagen of their skin and bones.Collagen,a fibrous protein found in connective tissue,bone and cartilage,basically holds the body together. The loss of collagen is what causes sagging and deep wrinkles in older people.The process affected,Werman's team said,is known as"cross linking"."Too much crosslinking reduces elasticity and makes the skin stiff and rigid,and these are the conditions that encourage wrinkled skin,"Werman said in a statement. He said the same could be true of people, although this has not been shown."Americans are eating more and more processed foods such as carbonated drinks,baked goods,canned fruits,jams and dairy products that contain fructose," Werman said.Other studies have shown that high fructose intake can affect how the body handles glucose and increases insulin resistance一which can both be important measures of the tendency toward diabetes.The rats Werman worked with were fed much more than the average adult person might eat in a day,which is standard in such experiments.The rats were 12.5 grams of fructose per kg(2.2 pounds)of weight every day for a year. To compare,a person weighing 154 pounds(70kg)who drinks a quart(liter)of cola consumes about 60 grams of fructose,or 0.8 grams per kg of body weight.According to the passage,people who eat too much sweet junk food will_______.A:slow down their process of agingB:more likely to get diabetesC:get heavier than othersD:age faster than average people
考题
Rats and other animals need to be highly at tuned to social signals from others so that can identify friends to cooperate with and enemies to avoid.To find out if this extends to non-living beings,Loleh Quinn at the University of California,San Diego,and her colleagues tested whether rats can detect social signals form robotic rats.They housed eight adult rats with two types of robotic rat-one social and one asocial一for 5 our days.The robots rats were quite minimalist,resembling a chunkier version of a computer mouse with wheels-to move around and colorful markings.During the experiment,the social robot rat followed the living rats around,played with the same toys,and opened caged doors to let trapped rats escape.Meanwhile,the asocial robot simply moved forwards and backwards and side to side Next,the researchers trapped the robots in cages and gave the rats the opportunity to release them by pressing a lever.Across 18 trials each,the living rats were 52 percent more likely on average to set the social robot free than the asocial one.This suggests that the rats perceived the social robot as a genuine social being.They may have bonded more with the social robot because it displayed behaviours like communal exploring and playing.This could lead to the rats better remembering having freed it earlier,and wanting the robot to return the favour when they get trapped,says Quinn.The readiness of the rats to befriend the social robot was surprising given its minimal design.The robot was the same size as a regular rat but resembled a simple plastic box on wheels.“We'd assumed we'd have to give it a moving head and tail,facial features,and put a scene on it to make it smell like a real rat,but that wasn’t necessary,”says Janet Wiles at the University of Queensland in Australia,who helped with the research.The finding shows how sensitive rats are to social cues,even when they come from basic robots.Similarly,children tend to treat robots as if they are fellow beings,even when they display only simple social signals.“We humans seem to be fascinated by robots,and it turns out other animals are too,”says Wiles.
What did the social robot do during the experiment?A.It followed the social robot.
B.It played with some toys.
C.It set the trapped rats free.
D.It moved around alone.
考题
Rats and other animals need to be highly at tuned to social signals from others so that can identify friends to cooperate with and enemies to avoid.To find out if this extends to non-living beings,Loleh Quinn at the University of California,San Diego,and her colleagues tested whether rats can detect social signals form robotic rats.They housed eight adult rats with two types of robotic rat-one social and one asocial一for 5 our days.The robots rats were quite minimalist,resembling a chunkier version of a computer mouse with wheels-to move around and colorful markings.During the experiment,the social robot rat followed the living rats around,played with the same toys,and opened caged doors to let trapped rats escape.Meanwhile,the asocial robot simply moved forwards and backwards and side to side Next,the researchers trapped the robots in cages and gave the rats the opportunity to release them by pressing a lever.Across 18 trials each,the living rats were 52 percent more likely on average to set the social robot free than the asocial one.This suggests that the rats perceived the social robot as a genuine social being.They may have bonded more with the social robot because it displayed behaviours like communal exploring and playing.This could lead to the rats better remembering having freed it earlier,and wanting the robot to return the favour when they get trapped,says Quinn.The readiness of the rats to befriend the social robot was surprising given its minimal design.The robot was the same size as a regular rat but resembled a simple plastic box on wheels.“We'd assumed we'd have to give it a moving head and tail,facial features,and put a scene on it to make it smell like a real rat,but that wasn’t necessary,”says Janet Wiles at the University of Queensland in Australia,who helped with the research.The finding shows how sensitive rats are to social cues,even when they come from basic robots.Similarly,children tend to treat robots as if they are fellow beings,even when they display only simple social signals.“We humans seem to be fascinated by robots,and it turns out other animals are too,”says Wiles.Quin and her colleagues conducted a test to see if rats can________A.pickup social signals from non-living rats
B.distinguish a friendly rat from a hostile one
C.attain sociable traits through special training
D.send out warning messages to their fellow
考题
A 35000 ton product oil tanker will be delivered in a few days， as a surveyor， you go on board for finally confirming the documentations required by SOLAS， which shall be equipped on board. Which of them as below are correct：（）A、Fire control planB、Muster list and Emergency proceduresC、Nautical publicationsD、International code of signals and Inmarsat manualE、Training manual
考题
Which of the following statements is true about L1 cache？（）A、 L1 cache operates faster than the processor.B、 L1 cache is directly connected to the processor.C、 L1 cache can deliver data in 5ns.D、 L1 cache is located on the system board.
考题
An administrator has just finished physically replacing the system board in a Windows domain controller. Which of the following must be done before booting the server back into Windows?（）A、Update the time and date in the BIOS.B、Update the firmware on the SCSI controller.C、Update the firmware to the latest version.D、Configure IPMI on the new board.
考题
单选题A pharmaceutical company tested a new painkiller on 1,000 lab rats that were fed large doses of the painkiller for a two-month period. By the end of the experiment, 39 of the rats had died. The company concluded that the painkiller was sufficiently safe to test on humans. Which of the following, if true, provides the most support for the pharmaceutical company’s conclusion?A
The amount of painkiller fed to the rats was substantially greater, in relation to body mass, than the dosage any human would take under normal circumstances.B
Because of the different body chemistry of humans and rats, some compounds can be dangerous for rats but safe for humans, and vice versa.C
Tests of this same painkiller on dogs showed that 3 out of 50 dogs developed lesions on their livers during the course of the experiment.D
The researchers found that during the experiment, the rats showed a significantly lower sensitivity to pain than rats do under normal circumstances.E
In an experiment of this length with this number of rats, it is not unusual for up to 50 rats to die during the experiment for reasons unrelated to the experiment itself.
考题
单选题The disinfection of various compartments in a vessel by filling with a gaseous agent to destroy rats and all insects pests which act as germ carriers means（）.A
displacementB
fumigationC
dischargingD
compensation
考题
多选题A 35000 ton product oil tanker will be delivered in a few days， as a surveyor， you go on board for finally confirming the documentations required by SOLAS， which shall be equipped on board. Which of them as below are correct：（）AFire control planBMuster list and Emergency proceduresCNautical publicationsDInternational code of signals and Inmarsat manualETraining manual
考题
单选题An aircraft has indicated that he wants you to change course and follow him. You cannot comply because of an emergency on board. Which signal should you make?（）A
Fire a red flare at night or a red smoke signal by dayB
Send the Morse signal N by flashing lightC
Make a round turn (360°) and resume courseD
Make an S turn (hard right then hard left) and resume course
考题
单选题An oiler was badly burned and you are communicating with a passenger ship that has a doctor and hospital on board. You want to rendezvous in a certain position so the oiler can be evacuated for medical treatment. Which code should your message contain?（）A
MAFB
MABC
MAAD
MAE
考题
单选题The disinfection of various compartment in a vesel by filling them with a gaseous agents to destroy rats ect.means（）.A
fire drillsB
washing and cleaningC
fumigationD
quarantine
考题
单选题The certificate of pratique certifies that （）.A
the ship has no rats or mice on boardB
no quarantinable disease has been found on the vesselC
no person has died during the voyage the ship has just completedD
all the crew members have no health problem
考题
单选题Which of the following statements is true about L1 cache？（）A
L1 cache operates faster than the processor.B
L1 cache is directly connected to the processor.C
L1 cache can deliver data in 5ns.D
L1 cache is located on the system board.
考题
单选题询问船上健康状况。（）A
Enquire the health conditions on board.B
Enquire the safety conditions on board.C
Enquire the loading conditions on board.D
Enquire the fire conditions on board.
考题
单选题I’m on fire and have dangerous cargo on board. The most urgent assistance (最紧急的援助)in this case would be（） .A
lifeboatB
medicineC
firefightingD
lifesaving
考题
单选题One method of controlling rats on vessels is by rat-proofing. Rat-proofing is accomplished by （）.A
installing rat guards on the mooring lines when in portB
keeping foods protected and avoiding the accumulation of garbageC
eliminating possible living spaces for rats when the ship is constructedD
trapping and/or poisoning the rats
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