【单选题】有关汽车发动机配气机构传动叙述,错误的是
A.
滚子链由内链板、外链板、套筒、销轴和辊滚子组成
B.
为保证同步带传动同步,防止发生干涉现象,安装同步带时,应先固定张紧轮,后安装同步带
C.
曲轴常用于往复运动的机械钟,通常曲轴可以实现直线运动与旋转运动的转换
D.
该机构中的凸轮按照形状和运动形式分属于盘形凸轮
【单选题】The trial jury in the criminal cases or civil cases should decide:
C.
whether the accused should be prosecuted
【单选题】根据力的效果分类,下列关于力的分类中不合适的是( )。
【单选题】Public interest law includes
C.
criminal and civil cases
D.
wealthy clients' cases
【单选题】Most of the civil cases are actually tried by ( ).
【单选题】Public interest law includes ______.
C.
criminal and civil cases
【单选题】如图所示,直线AB和CD相交于点O,若∠AOD与∠BOC的和为236°,则∠AOC的度数为
【单选题】( ) are systems of law whose sources are the decision in cases by judges.
【单选题】代码执行后,变量m的值是varx=11;vary="12";varm=x+y;
【简答题】用 HBr 处理( R )— 2 —溴丁烷得到( S )— 2 —溴丁烷的反应机理是