单项选择题

The most common type of davit found on merchant vessels today is the ______．
A.Radial
B.Sheath-screw
C.Gravity
D.Quadrantal

A.A.Radial
B.Sheath-screw
C.Gravity
D.Quadrantal
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HBase中显示表的指令是？ A、show B、get C、put D、list
单项选择题
A.0B.0.43C.0.75D.－0.86
A.0
B.0.43
C.0.75
D.－0.86
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