在自动线当中,机床需要配备气动门,在参数当中,气动门类型应该设置成()
A.1
B.2
C.3
参考答案:C
— Will you please stay here for the party?
— Sorry, I _____. I'll have to go to an important meeting. [ ]
A. mustn't
B. needn't
C. can't
D. won't
“望洋兴叹”这个成语出自()。
A.《秋水》
B.《寡人之于国也》
C.《五代史伶官传序》
D.《论毅力》