题型：填空题 已知室温时，0.1mo1/L某一元酸HA在水中有0.1%发生电离，下列叙述错误的是（ ）A．该溶液的pH=4B．升高温度，溶液的pH增大C．此酸的电离平衡常数约为1×10-7D．由HA电离出的c（H+）约为水电离出的c（H+）的106倍 查看答案
题型：填空题 给下列的问句选择正确的答语。( ) 1. What's the date?( ) 2. How do you feel? ( ) 3. What's the matter?( ) 4. How big are your feet?( ) 5. How long is your pencil? ( ) 6. Does your nose hurt?( ) 7. Do you have a toothache? A. I have a cold.B. It's 15 cm long. C. No, it doesn't. D. It's Jan.12th. E. I wear size 23.F. Yes, I do. G. I feel sick. 查看答案