动脉切开术可用于()
A.完全胃肠外营养
B.失血性休克
C.两者均可
D.两者均否
参考答案:B
空气中容纳水汽的数量随气温变化,气温越高,则:()
A.可以容纳的水汽就越少
B.可以容纳的水汽就越多
C.当空气不能再容纳更多的水汽时,温度就会变化
完成下列反意疑问句。
1. The weather was very hot yesterday, ?
2. Andy has supper at home, ?
3. Bill can understand some Chinese , ?
4. Nothing is wrong with his bike, ?
5. There's a book on the desk , ?