单项选择题

The center of gravity of a freely swinging load suspended from a pedestal crane acts as if it were located at the（）.

A.counterweight
B.pedestal
C.longitudinal centerline
D.point of suspension

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单项选择题

A.bracing
B.battening
C.blocking
D.shoring

单项选择题

A.bulkheads
B.stringers
C.frames and beam brackets
D.deck longitudinals

单项选择题

A.at a lower level than the baseline
B.on the longitudinal centerline
C.higher than the center of gravity
D.at amidships