低压气瓶最高公称工作压力小于()MPa的气瓶。
A.4;
B.8;
C.10;
D.15。
参考答案:C
—Would you like to play basketball?
—_______. [ ]
A. I'd like
B. I'd love to
C. No, I wouldn't
D. Yes, I would.
轻型击实试验,仅适用于粒径不大于25mm的土,重型击实试验适用于粒径大于25mm的土。