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[单选] In the process of the shafting management, special attention should be paid to()

A . on the sailing, the water in the aft peak tank should be excluded as much as possible
B . the stuffing style ahead sealing shouldn’t have any water leaking out
C . Simplex astern sealing shouldn’t have any oil leaking out
D . Simplex ahead sealing can have some oil leaking out

A block and tackle is rove to advantage. This means that the(). blocks have been overhauled。 hauling parts of two tackles are attached。 hauling part leads through the movable block。 hauling part leads through the standing block。 三极管基极的作用是()载流子。 发射。 输送和控制。 收集。 产生。 手动卷帘门的防滑锁的作用是()。 防止卷帘门意外滑落。 防止人为拉下卷帘门。 方便卷帘门开启。 方便卷帘门所闭。 项目范围的定义要以其组成的()定义为基础。 A.服务的范围。 B.产品的范围。 C.产品和服务的范围。 D.产品或服务的范围。 A bilge suction line,in a fishing vessel with more than 16 individuals aboard,must have a strainer with an open area not less than how many times the open area of the suction line?() one。 two。 three。 four。 In the process of the shafting management, special attention should be paid to()
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