离心式压缩机设计的每段进气温度控制在()℃范围内。
A.0~10
B.10~20
C.20~30
D.30~40
参考答案:D
一Shall we go out for a trip to relax ourselves after the final exam?
—__________.[ ]
A. That's all right.
B. It doesn't matter.
C. That's a good idea.
D. Have a great time.
小学德育目标确立的依据有:我国社会发展提出的新要求,教育目的中总的规定,儿童______的特点与规律等方面。