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单选题
Before the operation of the derrick, check all （）(索具)closely and everything must be in good condition.
A
blocks
B
goosenecks
C
tackle
D
guys
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单选题Accidental flooding of the engine room bilges by the bilge main is prevented by （）.A
stop-check valves installed in the bilge manifoldsB
using a positive displacement reciprocating bilge pumpC
installing eductors in all bilge rose boxesD
installing a swing check before each bilge valve
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单选题During operation, the （）should check the working condition of the derrick.A
foremanB
operatorC
openerD
stevedore
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freeB
fastenedC
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atC
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单选题Before the（）of the derrick, check all the tackle closely.A
operationB
operateC
operatedD
operator
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ventilate all compartments，see that the machinery is clean and there are no obstructionsB
just turn the key and start upC
take for granted that there are no fuel leaksD
assume there are no volatile fumes in the engine space
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单选题Which safety check（s）should be made before letting go the anchor（）.A
See that the anchor is clear of obstructionsB
See that the chain is all clearC
See that the wildcat is disengagedD
All of the above
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