單項(xiàng)選擇題Two individuals authorized to serve as a lifeboatman must be assigned to any lifeboat that has a capacity of more than（）.

A.10 persons
B.20 persons
C.30 persons
D.40 persons


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1.單項(xiàng)選擇題The water pockets located on the underside of inflatable liferafts（）.

A.stow rainwater; these 4 spaces do not take up valuable space
B.act as stabilizers by filling with sea water as soon as the raft is inflated and upright
C.hold the freshwater required by regulation to be provided in the raft when packed
D.None of the above

2.單項(xiàng)選擇題The signal given to commence lowering the lifeboats is（）.

A.3 short blasts of the ship's whistle
B.1 short blast of the ship's whistle
C.3 long blasts of the ship's whistle
D.1 long blast of the ship's whistle

3.單項(xiàng)選擇題The order to enter the lifeboats will be given from the（）.

A.bridge
B.forward station
C.aft station
D.any hold in which the stevedores are working

4.單項(xiàng)選擇題The operating cord on an inflatable liferaft should be renewed by（）.

A.removing the top half of the shell，cutting the line at its source，and renewing completely
B.cutting the line where it enters the case and replacing that portion
C.leaving the original line and tying another one to it so the two lines will take the strain
D.an approved servicing facility ashore