生产经营单位必须为从业人员提供符合国家标准或者()标准的劳动防护用品。A、当地 B、本

题型:单项选择题

问题:

生产经营单位必须为从业人员提供符合国家标准或者()标准的劳动防护用品。

A、当地

B、本单位

C、行业

考点:危险品从业资格考试危化品安全管理危化品安全管理题库
题型:单项选择题

一个300 g的垒球,以20 m/s的速度飞来,运动员以棒击之,球以30 m/s的速度反方向飞回.设击球时间为0.02 s,求棒对球的平均作用力.

题型:单项选择题

阳黄与阴黄的辨别是 ()

A.病程的久暂

B.黄色的明暗

C.舌苔的黄白

D.脉象的迟数

E.目睛是否黄染

题型:单项选择题

1) ______ the Oral Approach
2) ______ the Cognitive Approach
3) ______ the Direct Method
4) ______ the Audiolingnal Method
5) ______ the Natural Approach
a) According to Gouin, verbal expression is intimately linked with thought about real events. Thoughts and utterances came in sequences and ends-means series.
b) Primary importance is attached to meaning, context and situation.
c) Language is structured like a pyramid, that is ,linguistic levels are systems within systems.
d) Language is characterized by rule-governed creativity.
e) Communication is the primary function of language, and emphasis is on meaning.

题型:单项选择题

杠杆百分表的分度值为()mm,测量范围为()mm。

题型:单项选择题

请列举人类面临的十大环境问题的其中五个?

更多题库