单项选择题

Which is a part of a vessel’s standing rigging（）.

A.Sheet
B.Backstay
C.Topping lift
D.Downhaul

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单项选择题

What term describes a three-strand rope laid up right- or left-handed（）.

A.Soft-laid
B.Hard-laid
C.Sennet-laid
D.Hawser-laid

单项选择题

What is NOT a function of the steam drum of a marine water-tube boiler（）.

A.Receives saturated steam from the generating tubes
B.Serves as a reservoir of boiler feed water
C.Holds internal fittings for separation of moisture from steam
D.Collects steam exhausted from the turbines