M933型硫化氢分析仪对样气系统的要求有哪些？

A. Φ48×3.5或Φ51×3
B. Φ38×3.5
C. Φ30×3.5
D. Φ55×3.5

A. 2
B. 3
C. 4
D. 5

A. No, I already have plans.
B. I'd love to, but I'm busy tonight
C. No, I really don't like being with you
D. I'm ill, so I shouldn't go out.

A. 正确
B. 错误