單項選擇題The holding capability of an anchor is primarily determined by the（）.

A.shape of the anchor
B.stowage of the anchor on board
C.anchor's ability to dig in
D.size of the vessel and its draft


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1.單項選擇題The function of the bypass valve on the self-contained breathing apparatus is to（）.

A.control the pressure of the oxygen as it enters the body
B.allow the wearer to manually give himself oxygen
C.release excess heat which would otherwise cause the bottle to explode
D.allow exhaled gases to pass outside the bottle

3.單項選擇題The exhaust pipe must be gas tight throughout its entire length otherwise（）.

A.bilge water may enter the exhaust pipe
B.entry of air may cause vapor lock
C.carbon monoxide may enter the interior of the vessel
D.the joint gaskets may be blown

5.單項選擇題The C02 flooding system is actuated by a sequence of steps which are（）.

A.break glass，pull valve，break glass，pull cylinder control
B.sound evacuation alarm，pull handle
C.open bypass valve，break glass，pull handle
D.open stop valve，open control valve，trip alarm