我国的电视标准是每帧分奇偶两场，共传( )行信号。 A．750 B．625 C

The train was crowded and I had to get into a carriage ____ already seven other people.

A．when there were

B．which there were

C．that there were

D．where there were

肾动脉粥样硬化可引起

A．原发性颗粒性固缩肾

B．瘢痕性固缩肾

C．大红肾

D．大白肾

奴隶制五刑除死刑外还包括（）

A.墨刑

B.劓刑

C.剕刑

D.宫刑

法律规定的不以当事人的主观意志为转移的能引起法律关系的产生、变更和消灭的属于( )。

A．法律解释

B．法律事件

C．法律行为

D．法律部门

高速道岔铺设静态精度的主要指标：轨距±1mm，高低、轨向、扭曲（6.25m基线）、水平等均为（）。

A.1mm

B.2mm

C.3mm

D.5mm