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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.
【单选题】螺纹小径与公称直径的关系是 ▲ 。
A.
小径=公称直径-1.3导程
B.
小径=公称直径-1.08导程
C.
小径=公称直径-1.08螺距
D.
小径=公称直径-1.3螺距