單項選擇題A drift lead indicates that the vessel is dragging anchor when the line is().

A.taut and leading forward
B.slack
C.leading out perpendicular to the centerline
D.leading under the hull


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1.單項選擇題A deepwell pump is a type of().

A.screw pump
B.centrifugal pump
C.eductor
D.gear pump

2.單項選擇題A bowline is used to().

A.join lines of equal size
B.form a temporary eye (loop) at the end of a line
C.be a stopper
D.keep a line from fraying

3.單項選擇題A block that can be opened at the hook or shackle end to receive a bight of the line is a().

A.bight block
B.gin block
C.heel block
D.snatch block

4.單項選擇題You can safely step in the bight of a line().

A.when it is not under strain
B.if both ends are made fast
C.in an emergency
D.at no time