粗牙普通螺纹的代号不必标注螺距。
参考答案:对
清政府在新疆地区维护统一,加强管辖的举措包括
①平定大小和卓叛乱 ②设置西域都护
③设置伊犁 * * ④设置新疆行省
A.①②③
B.①④
C.①③
D.②③④
I asked him to _____ me a few minutes so that we could go over all the problem.
A.spend
B.save
C.spare
D.share