已知：H2O（g）═H2O（l）△H=Q1kJ•mol-1 C2H5OH（g）═

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问题选择题

已知：H₂O（g）═H₂O（l）△H=Q₁kJ•mol^-1

C₂H₅OH（g）═C₂H₅OH（l）△H=Q₂kJ•mol^-1

C₂H₅OH（g）+3O₂（g）═2CO₂（g）+3H₂O（g）△H=Q₃kJ•mol^-1

若使46g酒精液体完全燃烧，最后恢复到室温，则放出的热量为（）

A．（Q₁+Q₂+Q₃）kJ

B．0.5（Q₁+Q₂+Q₃）kJ

C．（0.5Q₁-1.5Q₂+0.5Q₃）kJ

D．（Q₂-3Q₁-Q₃）kJ

答案

答案：D

单项选择题共用题干题

患者，30岁。人工流产加放环后 * * 流血1个月余，取环后 * * 流血仍持续至今3个月未净。近1周咳嗽、痰中带血丝。查子宫稍大、质软，胸片提示右上肺有一直径2cm球形阴影，血β-HCG248ng／ml。

上述情况最恰当的处理是（）

A.化疗

B.抗感染

C.诊刮

D.手术

E.药物止血

填空题

用所给词的适当形式填空。

1.Who is (good) at math, Tom or Jim?

2.I don't want to go to the clothing store.

It has the (bad) clothes in town.

3.I think English is the (interesting) subject of all the subjects.

4.I have the (many) books in my family.

5.Who is the (tall) of the three girls?

6.Today is a (fine) day. It's the (fine) day this week.