Kedde试剂和Baljet试剂主要用来鉴定乙型强心甙类。

鉴定生物碱的试剂（   ）

鉴定生物碱的试剂是

常用的生物碱沉淀试剂有（）试剂、（）试剂、（）试剂和（）试剂。最常用的显色剂是（）试剂，主要用于（）中。

小口试剂瓶和滴瓶常用于盛放（），大口试剂瓶常用于盛放（）。

梅文鼎有哪些科技成就？

口服补液及时纠正脱水，应用ORS，说法正确的是（）

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。