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单选题
Which of the precautions listed should be observed when taking on diesel fuel?（）
A
Secure all lighting to the main deck
B
Provide a portable fan to blow away fumes
C
Prohibit smoking in the area
D
Display a black triangle during daylight hours
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单选题Which of the actions listed should be taken by the engineer on watch when the general alarm is sounded continuously for 10 seconds?（）A
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单选题When discharging bilge water, which criteria must be observed?（）A
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单选题Prior to starting most medium-speed propulsion diesel engines, which of the procedures listed should be observed?（）A
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单选题Which statement is FALSE concerning precautions during fueling operations?（）A
All engines，motors，fans，etc. should be shut down when fuelingB
All windows，doors，hatches，etc. should be closedC
A fire extinguisher should be kept nearbyD
Fuel tanks should be topped off with no room for expansion
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单选题Which of the following precautions should always be carried out in dry dock?（）A
Liquids should never be transferred between tanks without consulting the dock masterB
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Before re-floating, all sea chest strainers should be verified as having been replacedD
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单选题When running a large, low-speed, main propulsion diesel engine on heavy fuel, which of the following precautions should be observed when switching back over to diesel oil?（）A
The diesel oil must never be allowed to mix with the heavy fuelB
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The heating steam to the pre-heater should be secured as soon as the diesel fuel passes through the three-way valveD
The heating steam must be secured before the diesel oil passes through the three-way valve
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单选题When using slings，cargo handlers should take all the following precautions except（）.A
Ensure that slings are securely fastened around the loadB
Avoid careless winch operations，especially when handling fragile cargoC
Exercise care when using hooks，crowbars，and similar toolsD
Keep the loads as close to the rail or deck as possible
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