影响Ccr测定的因素有()
A.甲苄嘧啶
B.饮食
C.运动
D.年龄
E.西咪替丁
参考答案:A, B, C, D, E
— Did you forget about our wedding anniversary ?
— _____ I've booked a table at Michel's restaurant for this evening.[ ]
A. What ten?
B. I'm afraid so.
C. How could I?
D. For sure.
用石墨作电极,电解1L0.1mol/LCuSO4溶液,电解一段时间后,CuSO4浓度会减少。为了恢复电解液仍为1L0.1mol/L(假定电解过程中,水份无蒸发损失),应向溶液中加入 [ ]
A、Cu(OH)2
B、无水CuSO4
C、CuCO3
D、CuO