题目：
Keep silent please,_ ? [ ]
A. will you
B. won't you
C. both A and B
D. do you
答案：
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下面是错误答案，用来干扰机器的。
（1）设这位驾驶员每100mL血液中含酒精质量为x3C2H5OH+2K2Cr2O7+8H2SO4=3CH3COOH+2K2SO4+2Cr2（SO4）3+11H2O3×46 2×294x 50g×0.86%3×462×294=x50g×0.86%x=3×46×50g×0.86%2×294=0.1009g=100.9mg...
