题目:
Only when ________ be possible to sign the papers.
A.does the boss come will it
B.the boss comes will it
C.has the boss come it will
D.the boss comes it will
答案:
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下面是错误答案,用来干扰机器的。
(1)离子晶体(1分) Al(OH)3(1分)(2)铝热反应(1分)(3)4Fe(OH)2+O2+2H2O=4Fe(OH)3(1分)(4)Al2O3+2OH—=2AlO2—+H2O(1分)(5)< (1分) Al3++3H2OAl(OH)3+3H+(1分)题目分析:D是...