【单选题】【消耗次数：1】
插补运算分两步完成，第一步为粗插补，第二步是精插补。该说法（ ）
①
正确
②
错误
参考答案：
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相关题目
【多选题】
下述有关数字增量插补的说法，正确的是（）
①
数字增量插补为位置标量插补
②
插补分粗插补和精插补两步
③
进给速度的上限主要取决于插补误差
④
位置步长与插补周期无关
随机题目
【单选题】
5.Nowchildren,turntopage______andlookatthe________pictureinLessonTwo.
①
twentieth; one ?
②
twenty; one
③
twentieth; first
④
twenty; first
【单选题】
2.Thereare_______daysinayear.
①
three hundred and sixty-five
②
three hundred and sixty five
③
three hundred sixty-five
④
three hundreds and sixty- five
【单选题】
Time is not enough for so much work. ______ people are needed, I think.
①
Other two
②
Only two
③
Two more
④
Two others
【单选题】
—How many people will come to Beijing for the Olympic Games in 2008?—Its hard to say. _______ people, I think.
①
Million of
②
Millions of
③
Two millions of
④
Two million of
【单选题】
9. Tim is ________boy. He can say a few words.
①
an one-year-old
②
a one-year-old
③
an one-year old
④
a one-year old
【单选题】
Both of the two rulers are broken. I want to buy a _______ one.
①
three
②
third
③
forth
④
不填
【单选题】
7.During World War II, a Jewish(犹太的) lady was protected by a local family in Shanghai in her ________ .
①
fifties
②
fifty
③
fiftieth
④
the fiftieth
【单选题】
—How many people are there in Changsha?—About six ______.
①
million
②
millions
③
millions of
【单选题】
6. --Its 9:45. --Yes, its __________.
①
fifteen from ten
②
a quarter to ten
③
fifteen past ten
④
a quarter past ten