在化学分析中产生系统误差的主要原因，有哪些？如何消除？

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。

分析高混运行压差高的原因及处理措施。

一位化学教师在讲解“元素周期律”时，学生互动效果不好，原因是她在讲课过程中提出的问题没有调动学生学习本课的兴趣。（1）请你以“元素周期律”为例，设计一个课堂教学问题。（2）请说明化学教学提问的基本要求。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

财务分析概论包括的内容有（　　）。