问题
单项选择题
流式细胞仪中的鞘液和样品流在喷嘴附近组成一个圆形流束，自喷嘴的圆形孔喷出，与水平方向的激光束垂直相交，相交点称为（）。
A.敏感区
B.测量区
C.激光区
D.计算区
E.观察区
答案
参考答案：B
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流式细胞仪中的鞘液和样品流在喷嘴附近组成一个圆形流束，自喷嘴的圆形孔喷出，与水平方向的激光束垂直相交，相交点称为（）。
A.敏感区
B.测量区
C.激光区
D.计算区
E.观察区
参考答案：B
| 阅读理解。 | ||||
| ||||
| 1. Please call _____ to rent a three-bedroom apartment. | ||||
[ ] | ||||
| A. (010)8838-7166 B. 138-7682-5856 C. (010)8433-9211 D. (010)6378-3021 | ||||
| 2. You can rent your single room to _____ for $120 per month. | ||||
[ ] | ||||
| A. Dick B. Harry C. White D. Mr. Zhang | ||||
| 3. If you find an ID card, you can call ______ at (010)8433-9211. | ||||
[ ] | ||||
| A. White B. Harry C. Dick D. Mr. Zhang | ||||
| 4. If you can't find your bag, you can ______ to get it back in the evening. | ||||
[ ] | ||||
| A. call (010)8433-9211 B. go to Room 402 C. call Harry D. go to look for a single room | ||||
| 5. You want to rent a big apartment for your family for three months. You must take out ______. | ||||
[ ] | ||||
| A. ￥1950 B. $1950 C. ￥650 D. $650 |