( )指能够适应环境变化的雇佣关系具有更高的效率。
A．自我利益的克制
B．对雇佣关系的投资
C．适应性
D．可靠性
参考答案：C
You have to keep alert when you are in the supermarket; otherwise, you might _____ what you actually don’t need at all.
A．be persuaded to buying
B．persuade to buy
C．be persuaded into buying
D．persuade into buying
在三相电能表结构中有时采用两个制动元件并按转动元件轴心位置安装，这主要是为了（）。
A.增加制动力矩
B.减少转盘转动时产生的振动
C.降低转速
D.保证磁路对称
