影响压缩机生产能力的因素有哪些？
参考答案：
1.一级入口压力，2.一级入口温度；3.一级入口气体有效成份的含量，4.各级气缸进出口阀的泄漏和阻力.
阅读理解。
A Health Club-Dragon
Dragon is a Health Club. It is a great place, fun and friendly.
For further information, please call our club. Just do it!
1. Dragon is a _____ club.
A. health
B. math
C. music
D. history
2. If you want to play basketball, you can call _____.
A. 375-7442
B. 375-7682
C. 375-7465
D. 375-9876
3. You can take the dance class at _____.
A. 8:00 a.m.
B. 1:00 p.m.
C. 3:00 p.m.
D. 4:00 p.m.
皮内注射DNP引起的DTH反应明显降低是因为( )
A．接受抗组胺的治疗B．接受大量X线照射C．接受抗中性粒细胞血清治疗D．脾脏切除E．补体水平下降
