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【单选题】
定位基准相对于夹具上定位元件的起始基准发生位移而产生的定位误差( ) 。A.
定位误差
B.
定位副不准误差
C.
基准不重合误差
D.
尺寸误差
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【单选题】自流平地面涂层的施工应符合规范要求,以下描述不正确的是( )。
A.
配制好的底涂层材料应均匀涂装在基层上。
B.
固化完全的底涂层应进行打磨和修补,并清除表面浮灰。
C.
当采用溶剂型环氧树脂自流平砂浆地面材料时,应分次施工。
D.
涂层施工可以不连续,漏涂位置下次继续施工即可。
【单选题】听力原文： Penury was what people called a mystery man. We had known him for over seven years, ever since he became a member of our modest club, but be had a way of keeping his private lift to himself in a...
A.
Because nobody knew his address.
B.
Because nobody knew his age.
C.
Because Penury's private life was a secret.
D.
Because Penury was still a bachelor at the age of forty-five.
【单选题】By the end of last year, we _________seven hundred English words.
A.
learned
B.
have learned
C.
had learned
D.
would have learned
【简答题】已知椭圆C的焦点为F 1 （-1，0）、F 2 （1，0），点P（-1， 2 2 ）在椭圆上． （1）求椭圆C的方程； （2）若抛物线E：y 2 =2px（p＞0）与椭圆C相交于点M、N，当△OMN（O是坐标原点）的面积取得最大值时，求P的值． （3）在（2）的条件下，过点F 2 作任意直线l与抛物线E相交于点A、B两点，则直线AF 1 与直线BF 1 的斜率之和是否为定值？若是，求出定值；若不是...
【单选题】(Although) we had been present (at) roughly the same time, Mr. Brown saw the situation quite (diffetrent) from (the way) I saw it.
A.
Although
B.
at
C.
different
D.
the way
【单选题】Della had only one dollar and eighty – seven cents_____ Jim, her Husband, a Christmas present.A．t
A.
27．Della had only one dollar and eighty – seven cents_____ Jim, her Husband, a Christmas present. A．to buy
B.
which to buy
C.
for him to buy
D.
with which to buy
【单选题】(Although) we had been present (at) roughly the same time, Mr. Brown saw the situation quite (different) from (the way) I saw it.
A.
Although
B.
at
C.
different
D.
the way
【简答题】自流平地面涂层的施工应符合规范要求,以下描述不正确的是( )。A. 配制好的底涂层材料应均匀涂装在基层上。 B. 固化完全的底涂层应进行打磨和修补,并清除表面浮灰。 C. 当采用溶剂型环氧树脂自流平砂浆地面材料时,应分次施工。 D. 涂层施工可以不连续,漏涂位置下次继续施工即可。
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