【单选题】I'm sorry I have no time to talk with you now. The manager required that all the Work ________ before we leave for home.
【判断题】切削运动中速度最高、消耗功率最大的运动称为主运动。
【简答题】工件与刀具之间的相对运动称为切削运动,按其功用可分为主运动和进给运动,其中( )消耗功率最大。
【单选题】M:________? T:I'd love to, but I'm afraid I have no time." M:0h, no. You'll surely come over. T: It's very nice of you. But I'm sorry I have to go to a meeting.
A.
Do you have lunch out in a restaurant
B.
Shall I have you with me at my birthday
C.
Did you go to see the film
D.
Have you enjoyed yourself at the party
【单选题】I'm sorry that I have no dictionaries other than the Cambridge.
B.
很抱歉,除了《剑桥词典》外,我就没有别的词典了。
D.
很抱歉,除了《剑桥词典》外,我其他词典都有。
【单选题】下面( )是错误的描述。
A.
主运动速度最高,消耗功率最大,通常只有一个。
B.
切削用量用于描述切削加工中主运动和进给运动的参数。
C.
单位时间内刀具相对于工件在进给运动方向上的相对位移量称为进给速度vf。
【简答题】在切削中,消耗功率最大,速度最高的运动是主运动;使切削能持续进行,得以形成所需表面的运动称为 运动。