网友您好, 请在下方输入框内输入要搜索的题目:
题目内容
(请给出正确答案)
单选题
Which of the following may cause that excessively warm water leaves the condenser in a refrigeration plant? () (1) too little cooling water (2) too much cooling water (3) too warm cooler water
A
(1)only
B
anyof(1),(2)and(3)
C
anyof(1)and(3)
D
anyof(1)and(2)
参考答案
参考解析
解析:
暂无解析
更多 “单选题Which of the following may cause that excessively warm water leaves the condenser in a refrigeration plant? () (1) too little cooling water (2) too much cooling water (3) too warm cooler waterA (1)onlyB anyof(1),(2)and(3)C anyof(1)and(3)D anyof(1)and(2)” 相关考题
考题
The main propulsion diesel engine jacket water temperature rises above normal, with the raw sea suction and the expansion tank water level being normal. Which of the following problems is most likely the cause?A.Faulty thermostatic bypass valveB.Eroded zinc pencils in the heat exchangerC.Steam formation in the expansion tankD.Excessive leakage from jacket water pump seals
考题
Which of the following problems could cause the high pressure cutout switch to shut down the compressor in a refrigeration system?A.A shortage of liquid refrigerant.B.Excessive frost on the evaporator.C.Excessive condenser cooling water.D.Insufficient condenser cooling water flow.
考题
Which of the following actions may cause a trigger to be fired?()
A.DROPB.ALTERC.DELETED.ROLLBACK
考题
What represents poor sanitary procedures ________.A.Keep and use a separate filling hose for potable(drinking)waterB.Locate potable(drinking)water tanks as low as possible in the bilgeC.Eliminate enclosed spaces in which trash,food particles,dirt may gatherD.After washing dishes with soap and warm water,sterilize them in water of at least 170℉(76.7℃)
考题
Which of the following statements is TRUE according to the passage?___________A.Oceanic salinity has great effect on sea life
B.Many factors combine to cause changes in oceanic salinity
C.The movement of the water is related to the amount of salt
D.The temperature of the water has much to do with the oceanic salinity
考题
Which of the following is not the cause of the decrease in the oceanic salinity?___________A.Precipitation
B.Rain and snow
C.Formation of ice
D.Addition of water by rivers
考题
A Network Engineer is reporting that one of the AIX hosts is generating too much ICMP traffic, which is slowing the network. Which of the following options is the most probable cause?()A、A large FTP job is in process. B、A network interface was misconfigured. C、The ping command is being used excessively. D、A bad network interface card and/or network cable is in use.
考题
Which of the following actions may cause a trigger to be fired?()A、DROPB、ALTERC、DELETED、ROLLBACK
考题
When a technician is moving a CRT monitor to another location, the monitor falls and breaks. Which of the following is the BEST way for a technician to clean up after this accident?()A、Use gloves and a broom to sweep the glass and debris into a rigid container.B、Use a bucket of warm water and bleach to wash away loose debris before placing the glass in a trash can.C、Individually pick up the glass and place into a plastic bag, do not sweep as this may cause dust to become airborne.D、Use latex surgical gloves to place the glass into a plastic bag, sealing the bag after.
考题
Which of the following may cause a printer to not print correctly after updating from Windows 98 to Windows XP?()A、Incorrect printer driver.B、Printer needs calibration.C、Dirty printer head.D、Font settings on the printer.
考题
A system administrator is monitoring a system that has recently shown a decrease in performance.The administrator suspects that the system may be low on memory and may be paging excessively.Which of the following commands is best to identify a possible paging problem?()A、iostatB、netstatC、psD、vmstat
考题
单选题The exhaust pipe must be gas tight throughout its entire length otherwise().A
bilge water may enter the exhaust pipeB
entry of air may cause vapor lockC
carbon monoxide may enter the interior of the vesselD
the joint gaskets may be blown
考题
单选题Which of the following operations may be dangerous?A
Overfilling the cooker with food and water.B
Cleaning the cooker with detergent.C
Cooling the cooker with cold water.D
Setting too little cooking time.
考题
单选题Which of the following may hardness of the boiler water cause?() (1) scale formation (2) tube failure (3) corrosionA
(1)and(2)B
(1)and(3)C
(2)and(3)D
(1),(2)and(3)
考题
单选题Which of the following problems could cause the high pressure cutout switch to shut down the compressor in a refrigeration system?()A
A shortage of liquid refrigerantB
Excessive frost on the evaporatorC
Excessive condenser cooling waterD
Insufficient condenser cooling water flow
考题
单选题Which of the following may cause that an engine doesnt run on starting air?()A
too low starting air pressureB
main start valve closedC
neither A nor BD
A and B
考题
单选题Which cause of following will not lead to refrigeration plant short-cycle?()A
lack of refrigerantB
refrigerant with much waterC
set defectively low pressure relayD
no cooling water
考题
单选题Excessively warm water leaving condenser may be caused by()A
fouled tubes in shell and tube condenserB
too little or too warm condenser waterC
air or non-condensable gas in systemD
overcharge of refrigerant
考题
单选题Which of the following problems can cause an above normal air temperature to develop in the intake manifold of a turbocharged and after-cooled diesel engine?()A
Faulty turbocharger turbine diffuser ringB
Faulty turbocharger compressor ringC
Insufficient cooling water flowD
Clogged air intake filters
考题
单选题A Network Engineer is reporting that one of the AIX hosts is generating too much ICMP traffic, which is slowing the network. Which of the following options is the most probable cause?()A
A large FTP job is in process. B
A network interface was misconfigured. C
The ping command is being used excessively. D
A bad network interface card and/or network cable is in use.
考题
单选题According to the passage, which of the following statements is TRUE?A
All the universities have banned the sale ofbottled water.B
Plastic bottles may do harm to people's health.C
The purchase of soft drinks will increase.D
Bottled water is cheap and environment-friendly.
考题
单选题According to the third sentence of Paragraph 3, which of the following items is INCORRECT?A
Anaphylaxis may cause people to die.B
Eggs can damage all the allergic individuals’ immune system.C
One who is allergic to gluten can not eat com.D
Tuna may cause a person who is allergic to fish to die.
考题
单选题Which of the following problems can cause fluctuating pressures in the closed cooling system of a main propulsion diesel engine?()A
Defective temperature controls in the systemB
Cavitation in the cooling water pumpC
Opened vent in the cooling systemD
Restricted water passages in the engine
考题
单选题Which of the following conditions can cause below normal air pressure in the intake manifold of a turbocharged diesel engine?()A
Excessive piston blow-by to the manifoldB
Insufficient cooling water flowC
Accumulated water in the air boxesD
Clogged air intake filters
考题
单选题If an operating bilge pump is developing good vacuum, but is unable to discharge any water, which of the following problems is the most probable cause?()A
The wearing rings are excessively wornB
The suction strainer is cloggedC
The discharge valve is cloggedD
The shaft is worn
考题
单选题Which statement concerning the collection of fresh water is FALSE?()A
Fresh water may be obtained from fishB
Lifeboat covers or canopies should be washed with rain before drinking water is collectedC
Fresh water may be collected from condensation inside the liferaftD
Seawater should never be consumed
考题
单选题Which of the following conditions may need to be reduced when operating a large, low speed, main propulsion, diesel engine at low loads?()A
Injection pressuresB
Control air supply pressureC
Cooling water flow through after-coolersD
Lube oil temperature
热门标签
最新试卷