在完全竞争市场上，单个厂商对生产要素的需求曲线向右下方倾斜的原因是( )

在完全竞争市场上，厂商对生产要素的需求量取决于（　　）。

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。

Demand curve（or demand schedule） 需求曲线（或需求表）

如果厂商使用两种互补的生产要素L和K，那么厂商对L的长期需求曲线（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。