机械沉积分异、化学沉积分异

呋喃香豆素中，若7位羟基和6位上的异戊烯基形成呋喃环时，结构中的呋喃环、苯环、α-吡喃酮环在一条折线上，称为角型呋喃香豆素。（）

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。

异黄樟素属于第几类易制毒化学品？（）

属于异香豆素的是（）

下列选项中，属于文化学研究基础单位的是（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。