工作者承担的多项任务的集合指的是（）
A.职位
B.职务
C.职责
D.职级
参考答案：C
Fear is something that you are born with. You can’t ______yourself of it completely but you can ____ certain fears under certain conditions. .
A．break; get rid of
B．get; overcome
C．overcome; rid of
D．rid; overcome
镀锌铁皮面施涂色漆在打磨程序中应用（）砂纸.
A.1号砂纸
B.280#
C.360#
D.25%
