指令“G76P(m)(r)(a)Q(Δdmin)R(d);”中的“R(d)”是指()。
A.精加工次数
B.粗加工次数
C.螺距
D.精加工余量
A.精加工次数
B.粗加工次数
C.螺距
D.精加工余量
A、增加磁场B
B、减少磁场B
C、内外部磁感应强度B都与r成反比
D、内部磁感应强度B与r成反比,外部磁感应强度B与r成正比
听力原文:M: Could you please explain the assignment for Monday, Miss Smith?
W: Certainly. Read the next chapter in your textbook and come to class preparing to discuss what you've read.
Q: What is the probable relationship between the two speakers?
(14)
A.Secretary-Boss.
B.Client-Lawyer.
C.Student-Teacher.
D.Patient-Nurse.
A、69
B、70
C、6
D、7
听力原文:M: Why don't you want to sing? Can you carry a tune?
W: I'd love to, but I can't read music and I haven't got any training.
Q: Why doesn't the woman want to sing?
(7)
A.She can't read music.
B.She is afraid to sing.
C.She is' unable to sing.
D.Her voice is bad.
A.以上内容全选
B.撤消孔加工固定循环指令为G80.此外,G0OG01G02G03也起撤销作用
C.孔加工循环指令是模态指令,一旦建立。一直有效,直到被新的加工方式代替或被撤销;孔加工数据也是模态值
D.孔加工固定循环指令执行前,必须先用M指令使主轴转动
E.孔加工固定循环中,刀具长度补偿指令在刀具至R点时失效
听力原文:M: Sorry. I've been running slightly behind schedule.
W: Slightly? Steve, do you realize it's almost eleven?
Q: What does the woman mean?
(17)
A.Steve's clock is running fast.
B.Steve shouldn't go running late at night.
C.Steve's schedule is easier than hers.
D.Steve is extremely late.
听力原文:W: I'll invite you to our country house as soon as I finish my thesis.
M: At the rate you write, that may be next year.
Q: When is he invited?
(16)
A.Next year.
B.Soon.
C.When she finishes writing.
D.After he visits her.