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【单选题】

加工矩形42×6的内螺纹时,其小径D1为()mm

A.
35.0
B.
38.0
C.
37.0
D.
36.0
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题目标签:内螺纹小径矩形
参考答案:
参考解析:
.
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【单选题】HorsesWheneveranyone asks me what my favorite animal is, I always say, "Horses," I like almost all animals. _____(26)I don't have a horse of my own. Horses are very expensive. _____(27) You have to pa...

A.
There I could be around horses all the time.
B.
We're very lucky to live near a horse stable.
C.
It's very expensive to buy one and to own one.
D.
But horses have always been my very favorite animals.
E.
My favorite horse "Vrana" is older than a lot of other horses.
F.
For example, a horse is happy if its ears are forward and its tail is relaxed.

【多选题】厂房控制点(控制网为矩形)的测设检查内容为( )。

A.
检查水平夹角是否等于90。,其误差不得超过±10”
B.
检查高程
C.
检查SP是否等于设计长度,其误差不得超过1/10000
D.
检查垂直角的限差
E.
检查方位角