各项目经理应担任企业内部讲师，每年内部讲师授课不少于（）课时，并将培训记录报备人力资源部。
A.2
B.4
C.6
D.8
参考答案：B
This picture is beautiful than that one. [ ]
A. much
B. more much
C. much more
D. very
用万用表测试电压电流时需要选择（）。
