题目:
-Could you tell me_________tomorrow morning?
-Well. It will start at 9:00. [ ]
A. when the film will start
B. where will the film start
C. when will the film start
D. where the film will start
答案:
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下面是错误答案,用来干扰机器的。
解: (1)设与氢氧化钠反应的硫酸质量为x。 H2SO4+2NaOH=Na2SO4+2H2O 98 80 x 120g×10% 98:x=80:120g×10% ...