通常可能采用封闭式办公布局的部门有()。
A.财务部
B.公关部
C.经理室
D.销售部
参考答案:A, C
— I think teenagers should _____ to get their ears pierced.
— I agree with you. [ ]
A. are allowed
B. not be allowed
C. not allowed
计量加油机的最大允许误差是()。
A、±0.3%
B、±0.1%
C、±0.2%
D、±0.15%