问题
单项选择题
水滴在原油中的沉降速度与油水密度差（）。
A、成正比
B、成反比
C、成平方关系
D、无关系
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
水滴在原油中的沉降速度与油水密度差（）。
A、成正比
B、成反比
C、成平方关系
D、无关系
参考答案：A
| 用方框内所给词语的适当形式填空。 | |
2. Those old books ________________ too much room, but I don't know what to do with them. 3. Although it was noisy outside, he __________ playing the piano. 4. After the accident,Christopher Reeve was not expected to _______,but he made it. 5. Mike often__________ a bad cold. 6. We have solved the problems_________. 7. — What ______ you_____ this weekend? — Don't ask,Tom. I have lots of work to do. 8. The living cost you pay ________ where you live. 9. The alarm clock suddenly ____________ and he jumped out of his bed at once. 10. As a housewife, my days _____________ cooking and cleaning. |