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【简答题】
根据句意和首字母及汉语提示完成单词。 1. The s on the teacher's face showed that she was pleased with us. 2. Listen!There is somebody k at the door. 3. There are n 34 million people living here. 4. Now stop writing and listen to me c . 5. Trees and flowers are planted every year to make our country more b 6. Pollution is a (严重的) problem. Scientists have come up with some good ways to solve it. 7. It is (必要) to learn English well. 8. A lot of meetings were put off because of the (危险的) disease. 9. I (不知道) if the teacher will come tomorrow. 10. Ann has made great (进步) recently.
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【判断题】一般而言,膜相中表面活性剂占1%-5%,流动载体(萃取剂)占1%-5%,90%左右是膜溶剂,其中表面活性剂和膜溶剂是必须的,而流动载体不是必须成分。( )
A.
正确
B.
错误
【简答题】补全对话 A: 1) ____ Are these your pens? B: 2) _______ A: 3) ____________ B: It’s Anna’s. And the blue schoolbag is hers, too. A: And the eraser? 4) _______ B: Yes, it is. A: 5) __________, Gina. B: You’...
【简答题】马克思主义的含义、主要组成内容及其关系分别是什么?
【单选题】关于逸度的 下列 说法中不正确的是
A.
逸度就是物质从系统中逃逸趋势的量度
B.
逸度可称为 “ 有效压力 ”
C.
逸度表达了真实气体对理想气体的偏差
D.
逸度可代替压力，使真实气体的状态方程变为 fv=nRT
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