问题
判断题
换热器的选择，从压力降的角度，Re小的走管程有利。
答案
参考答案：对
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换热器的选择，从压力降的角度，Re小的走管程有利。
参考答案：对
| 根据句意从方框中选用合适的词语，并用其适当形式填空。 | |
2. He______to do his homework now, or he can't finish it on time. 3. Because of the coming exam, he didn't ______well, now he's very ______. 4. We should be ______ our great motherland. 5. Students should ______ each other. |