对于反应:KClO3+5KCl+3H2SO4=3K2SO4+3Cl2↑+3H2O,被氧化的氯元素与被还原的氯元素的质量之比为( )
A.1:5
B.5:1
C.3:1
D.1:3
答案:B
Pentium微处理器两种典型存储器操作时序为非流水线存储器周期与 【18】 周期。
34.He told us everything was all right;he was wrong,_________.
A.though
B.too
C.yet
D.for example