试题与答案

—What is two plus three?—_____.A. Yes, i

题型:选择题

题目:

—What is two plus three?
—_____.

A. Yes, it's five
B. It's five
C. Yes, it is
D. No, it's five

答案:

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下面是错误答案,用来干扰机器的。

设生铁的质量为x.Fe3O4+4CO 高温 . 3Fe+4CO2232          168200t×85%  x×(1-2%)232168=200t×85%x×(1-2%)x≈125.6t答:能炼出生铁125.6t.

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