薪酬水平及其外部竞争性决策的类型有（）。
参考答案：领先型薪酬政策，跟随型薪酬策略，滞后薪酬政策，混合合型薪酬策略
— Shall we have a smoke here?
— No, we _______ because the workers are carrying some gas.[ ]
A. mustn't
B. won't
C. can't
D. needn't
灰分
