在开展健康促进学校的任务的主要内容不包括（）。 A.学校卫生政策 B.学校物质环境

根据入射光线，完成光路图．

泵送混凝土的含砂率应比非泵送混凝土的含砂率低2％～5％．以提高可泵性。

ABC corp. apply food （） for export.

A. inspection

B. report

C. confirmation

D. quarantine

Man: I am looking for an apartment with a monthly rent to around two hundred dollars in this neighborhood. Can you give me some advice on that
Woman: Well, it’s rather hard to find anything for less than three hundred dollars around here. Rents are lower in suburbs, but you need transportation if you choose to live there.
Question: What do we learn from the conversation（）。

A. The man will probably have to find a roommate.

B. The man is unlikely to live in the suburbs.

C. The man will probably have to buy a car.

D. The man is unlikely to find exactly what he desires.

VSAT卫星便携站常用小功率（）功率放大器。

A.行波管

B.速调管

C.固态

D.电子管