尾水真空表测量的量值反映什么？
参考答案：测量尾水管进口断面的真空及其分布，是为了分析水轮机发生汽蚀和振动的原因并检验补气装置的工作效果。
—We’d like you to start work tomorrow if possible. ___________________
— I’m sorry, but I can’t possibly start until Monday.
A．Do you agree with me?
B．Is that a good idea?
C．Do you think I’m right?
D．Will that be all right?
Amy is ____________ than Sarah. [ ]
A. old
B. older
C. oldest
