发生职工伤亡事故,事故单位必须在()h内向公司事故主管部门报告。
A.12
B.6
C.4
D.2
参考答案:D
There is nothing wrong with using a credit card for purchases. It’s more _______ than carrying loads of cash.
A.convenient
B.valuable
C.sensitive
D.innocent
在发生重大事件或突发性事件时,需要各警种联合作战,但允许各警种和人民警察有权对不属于其职责范围的事项拒绝执行。( )