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单选题
Ernest Rutherford, a scientist when measuring the charge and mass of alpha particles, discovered that they are virtually identical to the nuclei of helium atoms.
A
a scientist when measuring the charge and mass of alpha particles
B
a scientist who measured the charge and mass of alpha particles
C
a scientist which measured the charge and mass of alpha particles
D
measuring the charge and mass of alpha particles, was a scientist when he
E
being the one who measured the mass and charge of alpha particles as a scientist
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参考解析
解析：
代词when只能用来指代时间，应该用who代替。
代词when只能用来指代时间，应该用who代替。
更多 “单选题Ernest Rutherford, a scientist when measuring the charge and mass of alpha particles, discovered that they are virtually identical to the nuclei of helium atoms.A a scientist when measuring the charge and mass of alpha particlesB a scientist who measured the charge and mass of alpha particlesC a scientist which measured the charge and mass of alpha particlesD measuring the charge and mass of alpha particles, was a scientist when heE being the one who measured the mass and charge of alpha particles as a scientist” 相关考题
考题
There are two types of twins: identical and non-identical twins. Identical twins are formed from a single egg in mother's body which divides to form. two separate babies. Identical twins look the same and are often dressed by their parents in clothes of the same colors. It is often difficult to tell identical twins from each other, even when they are standing side by side. Non-identical twins come into being when the mother produces two separated eggs at the same time, both of which grow to form. babies. In this case the twins look like normal brothers and sisters and are easy to tell one from the other.In the 1970s and 1980s a scientist did some research into twins. He invited many pairs of identical twins to university and asked them to take part in a week of tests. He was particularly interested in adopted (收养) twins who had been separated at birth. He would give the twins different kinds of tests to study their speed of thinking, their speech, their memory, the ways they saw and heard different things, and so on. Time and time again he found separated twins who preferred clothes of the same color, used the same kind of shaving soap, wore the same shaped square glasses and the same colored socks.There is a third type of twins, but it is a very unusual one. Twins who are joined together at birth are known in western countries as Siamese twins.(1)It is difficult to tell identical twins because ____________.A、they are dressed in the same clothesB、they are dressed in the same colorC、they are very alikeD、they are standing side by side(2)If the twins are easy to tell from each other, they are ____________.A、very probably non-identical twinsB、surely non-identical twinsC、surely identical twinsD、always a brother and a sister(3)Which of the following is NOT true according to this passage?A、In the 1970s and 1980s a scientist did some research into the two main types of twins.B、In the week of tests, he tested their speed of thinking, their speech, their memory and some other things.C、There were twins who had been separated from each other as soon as they were born.D、Very often, separated twins were found to choose things of the same kind, the same shape and the same color.(4)According to the passage, how many types of twins are there actually?A、oneB、twoC、threeD、four(5)This passage mainly tells us ____________.A、the main types of twinsB、what has been found out about twinsC、how twins are formedD、how a scientist studied twins
考题
There's still no () evidence that supports the scientist's theory.
A、clearB、obviousC、validD、true
考题
The scientist and professor ( )our meeting.
A、were to attendB、are to attendC、is to attendD、is attend
考题
Portable carbon dioxide fire extinguishers should be sent ashore to be rechargedA.when the remaining charge volume is less than 90 percent of the required volumeB.at each inspection for certificationC.at each annual inspectionD.when the weight loss exceeds 10% of weight of charge
考题
A ______ is one which affects almost the entire load virtually instantaneously．A.mass explosionB.projectionC.fireD.flowing
考题
One of the greatest contributions ofFreud is that he elaborated the structure of human psyche as "Id","Ego" and "Superego". "Ego" is the natural humanpsychological characteristic that changes everything in its way and makeseveryone a victim to undesirable consequences in their life. The pride andself-esteem if they are overrated in our mind will be shown in the form of Ego.The Human Ego conceals our "natural intellect" to create falseownership over every object. Here is an interesting story which couldillustrate the case.
Once there was a scientist who worked hardall through his life to make exact human physical body replicas of himself. Hemastered the art so perfectly that one could not easily tell the replica fromthe original. According to the natural process, the Angel Death knocked at hisdoor. The Angel Death felt puzzled by looking at the thirteen same persons.Obviously unable to recognize the original person, the Angel returned in vain.The scientist got the illusion that he can avoid death easily.
Nevertheless the Angel Death who has clearunderstanding of human life did not give up and came back with a trick Sheagain approached the scientist and was staring at the thirteen human figures.
Then she told the scientist, "You havemanaged everything correctly but you could not avoid a small flaw whilereproducing yourself′. The scientist hurriedly spoke out the small flaw that itwas impossible in his work. Then he was caught by Angel Death.
The Ego blinds us to hide reality, so wetend to make small mistakes though we are given greater skills and strength.Therefore each one of us has to be careful about our accomplishments andachievements so that we don′t make us blind toward this living world whereevery individual is presented upon with equal grace and strength. Thus we haveto decrease the feeling of "All is I" and increase the feeling of"I am nothing before All", which makes us proud of everything wehave.
How did the Angel Death find out theoriginal of the scientist?A.By her own naked eyes.
B.By finding the flaw of the scientist.
C.By cheating the scientist.
D.By making small mistakes.
考题
Robert will be in charge of the company when the manager is away.A:run
B:operate
C:control
D:be responsible for
考题
单选题Starting with the _____ that there is life on the planet Mars, the scientist went on to develop his argument.A
premiseB
pretextC
foundationD
presentation
考题
单选题The master shall be（）the marine environment when taking collision-avoiding action.A
Aware ofB
Clear ofC
In charge ofD
Interested with
考题
单选题When crossing a front,isobars tend to（）.A
change from smooth curves within the air mass to sharp bends at the frontB
change from sharp bends within the air mass to smooth curves at the frontC
pass smoothly across the front with no changeD
become closer together at the front and pass through in straight lines
考题
单选题A brand of cough syrup comes with a measuring cup attached so that customers can measure the proper dosage. A consultant has pointed out that this cup is unnecessary, since most customers have measuring cups at home. Since the cups increase the cost of packaging the cough syrup and reduce the total number of units that can be shipped in a standard package, the consultant advises that the company can increase its net revenue on this product (total revenue minus total costs) by selling the cough syrup without the measuring cups. Which of the following, if true, provides the strongest evidence that the company should not follow the consultant’s advice?A
Studies have shown that customers who use cough syrup without a measuring cup frequently take either too little or too much of the medicine, rendering the dosage either ineffective or, in cases of overdose, dangerous.B
The company has included a measuring cup with each bottle of cough syrup for the last 18 years.C
Studies have shown that 85 percent of consumers possess at home either a measuring cup, a set of measuring spoons or both.D
Many customers neglect to follow the recommended dosage of cough syrup even when the measuring cup is packaged along with the bottle of cough syrup.E
Shipping the cough syrup bottles without the measuring cups will provide a marginal improvement in the number of cough syrup bottles that can be shipped is a standard package.
考题
单选题During OSPF adjacency formation, in what state is a router when it is negotiating to be in charge of the database synchronization process?（）A
InitB
2WayC
ExStartD
Exchange
考题
单选题When a marine surveyor is employed to assist in the move of a mobile offshore drilling unit，he（）.A
becomes responsible for the safe movement of the rigB
relieves the Offshore Installation Manager at the moment the rig is free from the bottomC
must be designated as the person in charge of the rigD
is a specialist who is hired to provide advice and guidance on aspects of the move
考题
单选题The inner cloud bands of a hurricane，when viewed from a distance，form a mass of dense，black cumulonimbus clouds called the（）.A
bar of the stormB
eye of the stormC
funnelD
front
考题
单选题I’ll be _____ the whole factory next week when the director’s away.A
chargeB
in the charge ofC
in charge ofD
take charge of
考题
单选题When a ship in loaded condition floats at arbitrary water line, its displacement is to the relevant mass of water displaced by the ship（）A
equalB
largerC
smallerD
equivalent
考题
单选题In first two paragraphs, the author implies that______.A
a scientist may be confused what science means.B
young people have not done much work in laboratory.C
people who said young people should be scientifically educated have the tight idea on science.D
a philosopher is also a scientist.
考题
单选题When Jack Welch took charge of the company, it had a market value of about _____.A
$12 billionB
$20 billionC
$500 billionD
$2000 billion
考题
单选题The author says that he is a naturalist rather than a scientist probably because he think he ______.A
just reads about other people's observations and discoveriesB
comes up with solutions in most natural waysC
has a great deal of trouble doing mental arithmeticD
lacks some of the qualities required of scientist
考题
单选题In first two paragraphs, the author implies that _____.A
a scientist may be confused what science meansB
young people have not done much work in laboratoryC
people who said young people should be scientifically educated have the tight idea on scienceD
a philosopher is also a scientist
考题
单选题When measuring AC current flow, you must always connect the meter （）A
in series with the power source and loadB
in parallel with the power source and loadC
insuring correct polarityD
using the lowest range possible to prevent instrument damage
考题
单选题When a rescue vessel approaches a lifeboat in heavy seas，the person in charge of the lifeboat should（）.A
tie up to the rescue vesselB
transfer only those personnel who are not seasickC
wait for calmer weather before transferring personnelD
transfer all personnel immediately
考题
单选题When must the Master or person in charge of a ship log the position of load line marks in relation to the surface of the water in the logbook?（）A
Once a dayB
At the change of every watchC
Only when in fresh or brackish waterD
Prior to getting underway
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