更多"（） is a precaution which contribute"的相关试题:
[单项选择]（） is a precaution which contributes to avoiding trouble under normal operating conditions.
A. Constant inspection
B. Keeping constant load
C. Remaining constant temperature
D. Varying speed
[单项选择]Which precaution should be taken when testing a line throwing gun?（）
A. Never remove the line from the rocket
B. Fire it at an angle of approximately 90 degrees to the horizon
C. Wear asbestos gloves
D. All of the above
[单项选择]Which is NOT a safety precaution to be observed during the loading of LFG?（）
A. Report any leakage of cargo
B. Make sure the rake ends of the barge are completely dry and mopped
C. Ascertain that the hoses to be used are in good order
D. Be on the lookout for work being accomplished ashore in the vicinity of the barges
[单项选择]A precaution you should take before bunkering is to （） .
A. plug the vents
B. plug the sounding pipes
C. plug the scuppers
D. close the lids on the vents
[单项选择]The component of a refrigerating system in which the refrigerant vaporizes and absorbs heat is known as the （）.
A. condenser
B. vapor generator
C. accumulator
D. evaporator
[单项选择]A centrifuge will satisfactorily remove which of the following contaminants from fuel oil?（）
A. Gasoline
B. Water
C. Lubricating oil
D. sulphur compounds
[单项选择]When a fuel injection nozzle overheats, which of the problems listed can be expected?（）
A. The fuel metering will vary
B. The fuel will explode
C. The cylinder head will crack
D. The engine will stop
[单项选择]Concerning the incinerator’s operation, which of the following is not correct?（）
A. Scavenging time should be more 30 seconds before igniting
B. The temperature of sludge tank is 80~100℃
C. First igniting the incinerator with diesel oil, when the temperature of health is about 600℃, the sludge oil drawn in
D. The ash can be dumped into sea when the distance is more than 3 miles from land
[单项选择]As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）
A. Exhaust temperatures
B. Raw water pressure
C. Lube oil pressure
D. Air box pressure
[单项选择]Which QoS requirement applies to streaming video traffic?（）
A. one-way latency of 150 ms to 200 ms
B. jitter of 30 ms or less
C. packet loss of 2 percent or less
D. 150bps of overhead bandwidth
[单项选择]Which VPN management feature would be considered to ensure that the network had the least disruption of service when making topology changes?（）
A. dynamic reconfiguration
B. path MTU discovery
C. auto setup
D. remote management
[单项选择]Which of the following conditions may contribute to the formation of deposits on the blades of the turbocharger turbine?（）
A. Poor combustion
B. High cylinder oil consumption
C. Leaking exhaust valves
D. All of the above
[单项选择]Which factor must be considered when determining the order of loading of dissimilar products through the same piping system aboard a tanker? （）
A. Contamination of the cargo
B. Flash points
C. Reid vapor pressures
D. Specific gravities
[单项选择]The oil residues which cannot be discharged into the sea in compliance with MARPOL 73/78 shall be（）.
A. discharged to into special area
B. discharged into national waters
C. discharged into the designated zone
D. retained on board or discharged to reception facilities
[单项选择]Economics, several courses of which I have taken thus far,（）to be difficult but useful for almost all students。
A. prove
B. havebeenproved
C. proves
D. areproved
[单项选择]The board acknowledges the problems which （）from the newness of the approach.
A. arise
B. rise
C. arouse
D. raise
[多项选择]Given a subnet mask of 255.255.255.224, which of the following addresses can be assigned to network hosts?（）
A. 15.234.118.63
B. 92.11.178.93
C. 134.178.18.56
D. 192.168.16.87
E. 201.45.116.159
F. 217.63.12.192
[单项选择]One precaution to take prior to working in a freshly painted compartment where there are an excessive amount of paint fumes, is to （）.
A. take shallow breaths of air
B. ventilate the area
C. wear a breathing apparatus while working
D. keep a charged fire hose handy
