新生儿沐浴应注意()
A.勿使水流入耳、鼻
B.避免扑粉进入眼或吸入呼吸道
C.皮肤感染者应予隔离
D.防止婴儿受凉、损伤
E.操作者不可离开婴儿
参考答案:A, B, C, D, E
汽车尾气的无害化处理的反应为2CO(g)+2NO(g)N2(g)+2CO2(g) △H<0下列说法不正确的是
A.升高温度,正逆反应速率都加快
B.使用催化剂,正逆反应速率都加快
C.使用催化剂,可以降低活化能
D.升高温度,上述反应的平衡常数会增大
Speaker A: Can you come to my office early to help me with my paper Speaker B: ().
A. Thank you for your invitation. I’m sure to be there.
B. I’d like to, but I can’t leave until I’ve typed out the letters.
C. By all means. I have to finish my own paper first.
D. What do you expect me to do for you