下列关于色盲遗传的叙述,错误的是()
A.色盲患者男性多于女性
B.母亲色盲,儿子一定色盲
C.父亲色盲,女儿可能是色盲
D.父母都不色盲,子女一定不色盲
参考答案:D
—I had a really good weekend at my uncle's. —_______.
A.Oh, that's very nice of you
B.Congratulations
C.It's a pleasure
D.Oh, I'm glad to hear that
在拉伸单晶时,滑移面转向与外力轴成______角度时最易滑移。