三斜晶系的晶体常数特征为：（）

为什么正交晶系有四种布喇菲点阵：简单正交，底心正交，面心正交和体心正交，但四角晶系只有简单四角和体心四角两种布喇菲点阵？

L²PC中对称面和对称轴的数目加起来为2，故该对称型应属斜方晶系。

按平行六面体的形状与结点分布，三斜晶系空间格子有原始格子、底心格子、面心格子三种

我国反假货币“三师队伍”是指货币识别师、货币鉴别师）和货币鉴定师。

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。

晶体结构按晶胞形状对称性可划分为（）大晶系，考虑平移对称性晶体结构可划分为（）种布拉维晶格。

（ ）负责拟定二级建造师职业资格考试大纲，（ ）负责审定考试大纲。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。