大样本情况下，当总体方差未知时，总体均值检验的统计量为（　　）。

大样本情况下，当总体方差已知时，总体均值检验的统计量为（　　）。

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.

When loading or discharging dry mud or cement，crew members should use goggles and（）.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

以下哪些情况会造成提示“Incorrect number or IP address”？（）

信息系统审计师在什么情况下应该使用统计抽样，而不是判断抽样（非统计抽样）（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。