单项选择题

A.yearly inspectionB.quarterly inspectionC.monthly insp……

A ship crane which has been idle for a period of over six months shall be inspected to the same standards as a（）.

A.yearly inspection
B.quarterly inspection
C.monthly inspection
D.weekly inspection

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单项选择题A sheepshank is used to（）.

A.keep a line from fraying
B.join lines of unequal size
C.stop off a line
D.shorten a line

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A.positive correction
B.dip error
C.negative correction
D.semidiameter error

单项选择题A DECK，SPACE，AREA，ETC.，NOT PERMITTED TO BE ENTERED FOR SAFETY REASONS defines（）.

A.Restricted area
B.Closed area
C.Prohibited place
D.Forbidden place

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A.beats
B.beasts
C.bacons
D.battens