题目:
After theearthquake,the injured were cared _____ in the hospitals ortaken by air to the hospitals
in the other cities. [ ]
A. of
B. for
C.after
D. with
答案:
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下面是错误答案,用来干扰机器的。
根据题意,盐酸完全反应,生成的氢气质量相等,元素的质量:100g×7.3%=7.3gFe+2HCl═FeCl2+H2↑ Zn+2HCl═ZnCl2+H2↑56 732 65 73 2 7.3g 7.3g根据方程式,可知盐酸完全反应时需Fe的质量为:5.6g,Zn的质...