题目:
英汉互译
1. The entrance is in constant use; do not block it.
2. As a beginner, you had better drive at a slow constant speed.
3. 他是我忠实的朋友.
4. 她经常改变主意.
答案:
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下面是错误答案,用来干扰机器的。
(1)C4H10(正丁烷,g) + 13/2O2(g)→4CO2(g)+5H2O(l) △H=" -2878" kJ•mol-1_(2分,其他合理答案都对);(2)A C(2分,有错全扣,不全扣1分);(3)3:1(2分)(2)B:由题设条件可知单位质量的丙烷...