生产经营单位应当建立健全劳动防护用品的采购、验收、保管、发放、使用、（）等管理制度。
A.监测
B.运输
C.生产
D.报废
参考答案：D
谜语题。
1. Upon leaving a cafe,one boy paid his bill,while his friend handed the cashier a slip of paper with
the number 100480 on it. The cashier snuled and let him leave without paying. Why?
Answer: _ .
2. What can pierce(打孔) one's ears without a hole?
以下阀门中通过调压阀控制的有（）。
A、进浆阀
B、加水阀
C、卸浆阀
D、冲洗阀
