多项选择题：下列哪些能反映急性心肌梗死受损心肌面积大小A．肌钙蛋白测定 B．磷酸肌酸激酶同工酶测

题型：选择题

下列说法中正确的是（　　）

A．已知冰的熔化热为6.0kJ•mol^-1，冰中氢键键能为20kJ•mol^-1．假设每摩尔冰中有2mol氢键，且熔化热完全用于打破冰的氢键，则最多只能破坏冰中15%的氢键

B．已知一定温度下，醋酸溶液的物质的量浓度为C，电离度为α，K_α=（Cα）²/C（1-α）．若加入少量CH₃COONa固体，则电离平衡CH₃COOH≒CH₃COO^-+H⁺向左移动，α减小，K_α变小

C．实验测得环己烷（l）、环己烯（l）、和苯（l）的标准燃烧热分别为-3916kJ•mol^-1、-3747kJ•mol^-1和-3265kJ•mol^-1，可以证明在苯分子中不存在独立的碳碳双键

D．已知：Fe₂O₃（s）+3C（石墨）=2Fe（s）+3CO（g）△H=489.0kJ•mol^-1CO（g）+1/2O₂（g）=CO₂（g）△H=-283.0kJ•mol^-1

C（石墨）+O₂（g）=CO₂（g）△H=-393.5kJ•mol^-1则4Fe（s）+3O₂（g）=2Fe₂O₃（s）△H=-1641.0kJ•mol^-1

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题型：判断题

我国当前不存在能够和专政机关对抗的犯罪团伙、黑势力集团。

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题型：选择题

可再生资源也会变成不可再生资源的原因是[ ]

A．可再生资源得到了合理利用

B．可再生资源被开采利用

C．可再生资源开发利用增加

D．可再生资源遭破坏或污染

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题型：阅读理解

C

Kerry and Alice were both artists in Britain. They taught drawing and painting at Cambridge University. Although they were friends, each thought oneself to be the better painter.

One day, Kerry promised marriage to Alice. Surprised and pleased by the offer, the girl was not sure whether she would spend her future as a wife or a painter. After a moment she replied as follows, "Each of us must paint a picture. If yours is superior to mine, you can make me your wife. If not, please drop the question." Then it was decided to give it the following day.

The next morning. Alice hung her picture on the gate. It showed a bunch of flowers and won high praise from everyone who passed by. In fact, a crowd collected in front of her masterpiece and fixed eyes on it.

Several hours passed. Then Kerry was seen coming along to the gate with what appeared to be a beautiful leather suitcase in his hand. When he finally stopped before Alice, the girl artist brushed like a rose and agreed to marry him without any hesitation. Why?

64．What did Alice think Kerry's offer?

A. She liked Kerry, but she didn't expect him to promise marriage to her.

B. She didn't want to marry anybody.

C. She didn't like it at all.

D. She thought the offer wasn't polite.

65．In the sentence "If yours is superior to mine, you can make me your wife"。 "superior to" here means ____.

A. not so better than B. better than C. so good as D. as good as

66． Which of the following is true?

A. Kerry didn't accept Alice's suggestion.

B. Kerry wasn't sure of his painting so he dropped his offer.

C. Kerry did go the next day, but he failed to take a picture

D. Kerry agreed to Alice's suggestion.

67．Alice's picture won high praise because ____.

A. it was true to nature B. the flowers were red

C. it showed so large a bunch of flowers D. people felt it strange to hang it on the gate

68．The "leather suitcase" was in fact ____.

A. a real one B. a painting drawn by Kerry

C. a box with a picture in it D. made up of leather

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题型：单项选择题

在允许缺货的情况下，经济定货批量是使（）最小的进货批量。

A.进货成本与储存成本之和

B.进货成本

C.进货成本、储存成本与短缺成本之和

D.储存成本

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下列哪些能反映急性心肌梗死受损心肌面积大小A．肌钙蛋白测定 B．磷酸肌酸激酶同工酶测

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