一般每次垃圾推铺厚度达到()时,进行压实。 A.30~60cm B.50~100cm

题型:单项选择题

问题:

一般每次垃圾推铺厚度达到()时,进行压实。

A.30~60cm

B.50~100cm

C.10~30cm

D.100cm左右

考点:环保气象安全技能考试固体废物监测工综合练习固体废物监测工综合练习题库
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膜剂制备中,可作脱膜剂的是

A.甘油
B.豆磷脂
C.碳酸钙
D.山梨醇
E.液状石蜡

题型:单项选择题

Read and choose. (根据句子内容选出答案)

1. It's an animal. It likes to catch the mouse. It is a ____.[ ]

A. dog            

B. cat            

C. tiger

2. It's a kind of colours. The tree always have it. It is _____.[ ]

A. pink            

B. white          

C. green

3. It's a room. When you get tired you can sleep there. It is a _____.[ ]

A. bathroom          

B. kitchen            

C. bedroom

4. It's a kind of food. The rabbit likes it very much. It is a _____.[ ]

A. carrot            

B. beef            

C. bread

5. Winter is very cold. We can wear _____.[ ]

A. shirt            

B. sweater                

C. shorts

题型:单项选择题

设a,b,c分别是△ABC角A,B,C所对的边,sin2A+sin2B-sinAsinB=sin2C,且满足ab=4,则△ABC的面积为______.

题型:单项选择题

可引起急性胃炎的因素有()。

A.药物

B.幽门螺杆菌

C.应激

D.病毒

E.乙醇

题型:单项选择题

破碎机转动系统主要包括哪些部件?

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