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【单选题】
A型泵凸轮轴的润滑 ( )。
A.
压力润滑,由主油道供油
B.
飞溅润滑,单独加注机油
C.
柴油飞溅润滑
D.
柴油压力润滑
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【单选题】Hardly had I got home __________the telephone rang.A.thenB.whenC.as###SX
A.
Hardly had I got home __________the telephone rang. A.then
B.
when
C.
as
D.
than
【单选题】Hardly __________I got home when it began to rain.
A.
had
B.
am
C.
did
D.
that
【简答题】某煤质化验室新进一台自动量热仪,对它进行了精密度和准确度的测试,5次苯甲酸测试结果如下:11833,11825,11810,11798,11826(苯甲酸的标准热值为258J/g),判断其是否可用。(已知标准煤样11111a的标准热值Q gr,d =32.06MJ/Kg;11102d的标准热值Q gr,d =21.22MJ/Kg;两个标样的不确定度都为0.15MJ/Kg)
【单选题】挑梁的抗倾覆力矩设计值按公式Mr=0.8Gr(L2-Xo)计算,其中Gr是挑梁的抗倾覆荷载,它是挑梁尾端上部45°扩散角范围内的砌体与楼面永久荷载
A.
设计值之和
B.
设计值之和的50%
C.
标准值之和
D.
标准值之和的1.2倍
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A.
正确
B.
错误
【单选题】Hardly had I got home __________the telephone rang.
A.
then
B.
when
C.
as
D.
than
【单选题】Hardly had we got the project completed before the deadline when I _______ that a group of experts would come to _______ it. But to my disappointment, the so-called experts seemed to be totally amateu...
A.
was informed of; assess
B.
was informed; inspect
C.
was told; value
D.
became informed; see
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A.
号搜索
B.
初始化
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GR初期
D.
以上都是
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A.
before
B.
when
C.
while
D.
As
【单选题】每根环节吊弦不得少于两节,环的直径为线径的()。
A.
1一5倍
B.
5~10倍
C.
4-9
D.
3-8倍
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