单选题A ship crane which has been idle for a period of over six months shall be inspected to the same standards as a（）.Ayearly inspectionBquarterly inspectionCmonthly inspectionDweekly inspection
单选题
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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