Hello! Is that Mr Wang speaking?()
A. Yes. This is Mr Wang speaking.
B. Yes. Can I speak to Mr Wang?
C. Sorry, you'd better ask Mr Wang.
D. No, I can't speak.
查看答案
员工培训只对员工进行专业知识技能的培训。
A. 正确
B. 错误
我国卫生标准中,二氧化硫的限值为()毫克/立方米。
A. 15
B. 10
C. 4
D. 5
各种带编号的单据,不得撕毁,如果填写错误,可()。