切断机断料时,手与刀口的距离不得小于()。活动刀片行进时严禁送料。
A.100mm
B.150mm
C.250mm
D.350mm
参考答案:B
已知直角三角形三边长为三个连续整数,则该三角形三边长分别为______.
—Would you like to come to dinner this Sunday, Xiao Ming?
—________. [ ]
A. I'd love to, but I have lots of things to do.
B. Oh, no. That'll be too tired.
C. I'll stay at home.
D. Yes, please.