根据测算，恩格尔系数在40%~50%为小康水平。（）

联合国提出了一个划分贫困与富裕的标准，即恩格尔系数在60%以上者为绝对贫困，50%～59%为温饱，40%～50%为小康，30%～40%为富裕，30%以下为最富裕。那么下列结论错误的是（ ）。

可以在（）阶段采用Make-or-buy决策分析。

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。

根据联合国粮农组织提出的标准，恩格尔系数在（）为小康。

联合国根据恩格尔系数确定的评价贫富标准规定恩格尔系数在( )为温饱水平。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。