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【判断题】

螺纹的公称直径为螺纹小径d1。

A.
正确
B.
错误
举报
参考答案:
参考解析:
.
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举一反三

【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.

【单选题】成熟卵泡直径为:()

A.
8~10mm
B.
10~15mm
C.
12~18mm
D.
18~25mm
E.
22~30mm

【单选题】内螺纹的小径应画 。

A.
粗实线
B.
细实线
C.
虚线
D.
点划线