离心泵吸不上液体是气蚀现象。
题型：判断题
问题：
离心泵吸不上液体是气蚀现象。
题型：判断题
| Michael， Tim，Peter，Gina和Sarah正在各自打算去参观一座名塔。请仔细阅读第1-5题中的 个人情况说明和A到E五座名塔的介绍，选出符合各人要求的最佳选项。 | ||||||||||||||||||||
| ( )1. Tim, from America, is traveling around the world. His last stop is to visit a tower where he can spend the night. ( )2. Michael, a student of history, is ready to write a paper on old towers. He is going to visit one in Europe. ( )3. Gina, a teacher from Australia, likes shopping very much. She is thinking' of buying different things for her students. ( )4. Sarah is a college student. She is on holiday in July and would like to visit the tallest tower of the five below. ( )5. Peter is interested in plants and animals. He is now looking for a tower where he can see fish and other water animals. | ||||||||||||||||||||
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