通风除尘设施无法达到职业卫生标准限值的粉尘作业场所,操作人员必须佩戴防尘口罩、工作服、头盔、呼吸器、眼镜等个人防护用品。加强通风除尘设施的维护检修
参考答案:对
秘书与公众关系具有公务性、代表性及()
A.多向性
B.指向性
C.变化性
D.平行性
—How did you go home after the party last night?
—Well, there were no buses________we had to walk. [ ]
A. so as to
B. in order to
C. so that
D. in order that