A:HF
B:NaCl
C:HCl
D:K2SO4
The policeman_________ two thieves who were caught stealing in the supermarket.
用计算器求下列各式的值:
(1)24.12×2+3.452×4.2;(精确到0.1); (2)(2.42﹣1.32)×3.1+4.13;(精确到0.01)