电流对人体的伤害类型分为哪几类?
参考答案:两大类:电击和电伤。
肺结核主要感染途经为()。
A.唾液传播
B.呼吸道传播
C.生殖道传播
D.肠道传播
E.饮用排菌病牛的奶
There is _____ snow. Put on your coat. It's _____ cold today. [ ]
A. too much, much too
B. too many; much too
C. much too; too much