更多"If there is any doubt as to the pro"的相关试题:
[单项选择]Proper operation of the main engine reduction gear set requires the operation to monitor （）
A. the sump oil level
B. oil flow sight glasses
C. bearing temperatures
D. all of the above
[单项选择]For proper operation, auxiliary boiler feed water must have which of the following characteristics?（）
A. High oxygen concentration
B. Low pH
C. Proper alkalinity
D. All of the above
[单项选择]The successful operation of any engine or machine and （） depend on effective lubrication.
A. their no trouble period
B. their freely trouble period
C. its free trouble life
D. its trouble-free life
[单项选择]Faulty operation of any system is indicated by very definite （）.
A. symptoms
B. samples
C. traces
D. tracks
[单项选择]If you are unable to stop a diesel engine by any other means，you should（）.
A. discharge a CO2 extinguisher in the air inlet
B. pull off the distributor cap
C. secure the jacket water
D. secure the starting air supply valve
[单项选择]When a vessel is in any doubt as to whether such a situation exists she shall（）that it does exist and act accordingly.
A. consume
B. assume
C. perfume
D. resume
[单项选择]If the officer on watch is in any doubt as to the pilot’s actions，or intentions，he should （）.
A. notify the Captain as soon as possible
B. seek clarification from the pilot
C. take action by his own judgment
D. cease the duty of pilot's at once
[单项选择]If in any doubt as to the pilot’s actions or intentions，the officer in charge of the navigational watch shall（）.
A. notify the master immediately
B. take whatever action is necessary before the master arrives
C. take necessary actions at his/her discretion
D. seek clarification from the pilot
[单项选择]Before any machinery is put in operation，you should（）.
A. ventilate all compartments，see that the machinery is clean and there are no obstructions
B. just turn the key and start up
C. take for granted that there are no fuel leaks
D. assume there are no volatile fumes in the engine space
[单项选择]The heated feed-water entering any flash chamber of a flash-type evaporator will（）
A. vaporize, with the un-flashed water remaining at the temperature at which it entered the flash chamber
B. vaporize, with the un-flashed eater equalizing to the saturation conditions existing in the f lash chamber
C. vaporize, with the remaining water a t a temperature greater than it entered the flash chamber
D. boil, allowing steam bubbles to rise through the brine at the bottom of the flash chamber
[单项选择]Any action（）collision shall，if the circumstances of the case admit，made in ample time and with due regard to the observance of good seamanship.
A. taking to avoid
B. taking to avoiding
C. taken to avoid
D. taken to avoiding
[单项选择]In case of any loss or misfortune it is the duty of（）to take such measures as may be reasonable for the purpose of averting or minimizing a loss which would be recoverable under this insurance.
A. the Assured and their servants and agents
B. the Assurer and his servants and agents
C. the Charterer and his servants and agents
D. the Operator and his servants and agents
[单项选择]Proper GMDSS watchkeeping includes（）.
A. monitoring all required frequencies in the proper mode
B. reading all displays and/or printouts after silencing an alarm
C. notifying the Master of any distress alerts
D. All of the above
[单项选择]Two important considerations for the proper lubrication of a diesel engine include the delivery of the oil in sufficient amount and the （）.
A. cetane number
B. pour point
C. viscosity temperature
D. quality of the oil
[单项选择]Which is the proper method of determining whether a portable CO2 fire extinguisher needs recharging?（）
A. Check the tag to see when the extinguisher was last charged
B. Release a small amount of CO2; if the CO2 discharges，the extinguisher is acceptable
C. Weigh the extinguisher and compare the weight against that stamped on the valve
D. Recharge the extinguisher at least once each year
[单项选择]The camshaft drive is designed to maintain proper camshaft speed relative to crankshaft speedIn maintaining this relationship, the camshaft drive causes the camshaft to rotate at（）
A. one half crankshaft speed in a two-stroke cycle diesel engine
B. crankshaft speed in a two-stroke cycle diesel engine
C. two times crankshaft speed in a two-stroke cycle diesel engine
D. one-fourth times crankshaft speed in a four-stroke cycle diesel engine
