乙炔瓶内的已炔不能用尽，最后至少留（）的压力的乙炔。
A.0.1兆帕
B.0.01兆帕
C.0.5兆帕
参考答案：A
绘制施工进度计划图，首先应选择( )的表达形式。
A．施工设计进度计划 B．施工进度计划C．施工方案 D．施工程序编制计划
This basketball team had lots of excellent players, so its fans never expected that it_______ have failed in
the final.[ ]
A. must
B. might
C. ought
D. should
