在班期间禁止聚堆闲谈，在生产现场不准摘下（），辫子、长发应（）。
参考答案：安全帽；盘进安全帽内
Longlong's father is a businessman. He is very busy, so Longlong only talks _______ him _______ the
phone.[ ]
A. to; in
B. with; by
C. with; on
D. to; by
后勤管理
