- 搜標(biāo)題
- 搜題干
- 搜選項(xiàng)
單項(xiàng)選擇題
On a lifeboat equipped with Rottmer-type releasing gear，turning the releasing lever releases（）.
A.the painter
B.the after boat fall only if the boat is waterborne
C.both falls at the same time only if the boat is waterborne
D.both falls at the same time even if the boat has not reached the water
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