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Which davit type may be operated by one man ________．
A.Quadrantal
B.Gravity
C.Sheath-screw
D.Radial
参考答案
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The router receiving the route translates the Type 7 LSA into a Type 5 LSA.B
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SELECT Type =action C
SELECT Type :=action D
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three rockets，one of which shall be the buoyant typeC
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five rockets，two of which shall be the buoyant type
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