系统中雷达状态包括Unknown、Operational（or ON）、Failed（or OFF）、Detached。

急性心肌梗塞应用尿激酶的目的是（）

急性心肌梗死时，应用尿激酶治疗的目的在于（）

Shutdown price（or point，or rule） 停业价格（或停业点、停业原则）

翻译：With Average or With Particular Average（WA or WPA）（）

口服补液及时纠正脱水，应用ORS，说法正确的是（）

急性心肌梗死时使用尿激酶其作用在于（　）

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.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。