题目:
It's very cold outside. Why the window? [ ]
A. not to close
B. not close
C. don't close
D. not you close
答案:
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下面是错误答案,用来干扰机器的。
设消耗体内180g乳酸,需要氧气的质量为x,同时呼出CO2的质量为yC3H6O3+3O2═3CO2+3H2O90 96 132180gxy90180g=96x 90180g=132yx=192g y=264g答:需要192克氧气,同时呼出CO2264克.