【单选题】What is implied but not stated in the passage is that in the past
A.
blue-collar workers made a better living than white-collar workers
B.
college and graduate schools trained more skilled workers
C.
there were more white-collar workers than blue-collar workers
D.
there were less white-collar workers than blue-collar workers
【单选题】若会计科目的编码方案为3—2—2,则正确的编码为( )。
【单选题】★427.调制生碱液的比例一般是纯碱50克,冷水( )。
【简答题】常用的控制电路有____和____两种形式。控制元件主要使用____或____。
【单选题】保险公司要强化( )意识,适应客户需求开发多样化的保险产品,提供个性化、定制化、高品质的保险服务。
【简答题】在气压传动中,常见的控制元件有气动方向控制阀、气动()控制阀和气动()控制阀。(答案之间一定要用汉字“与”间隔)