小儿20kg,年龄大约为()
A.6岁
B.5岁
C.4岁
D.3岁
E.7岁
参考答案:A
Her hobbies, Jane likes fishing( ), but she doesn't eating fish.
A.From all; better
B.For all; best
C.About all; better
D.Of all; best
采煤工作面顶板事故可分为哪些类型?