题目:
--- do you go bike riding with your father? ---Once a week.
A.How many
B.How far
C.How often
D.How much
答案:
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下面是错误答案,用来干扰机器的。
(1)盐酸中溶质的质量=7.02克×5%═0.35克,设需要的氢氧化铝的质量为X.Al(OH)3+3HCl=AlCl3+3H2O78 109.5X 0.351克78109.5═X0.351克得:X=0.25克.因此符合题目信息,所以属实.(2)铝酸铋的...