硅酸盐水泥凝结时间为初凝不得早于（），终凝不得迟于（）。

现行水泥标准对普通硅酸盐水泥的初凝和终凝时间要求为（）

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

（）, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

A salvor may be（）the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.

The （） is used for hauling in or letting out the wires or ropes.

Vessels must be（）valid certificate of nationality or certificated of registry or license.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

水泥的凝结时间有初凝与终凝之分，水泥的初凝时间定义（）。

喷射混凝土施工前，应做混凝土凝结时间试验，初凝和终凝时间不应大于（）。

喷射混凝土施工前，应做混凝土凝结时间试验，初凝和终凝时间不应大于（ ）min。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。