问题
单项选择题
管路系统的特性曲线是随着（）的增加而上升。
A、流量
B、扬程
C、轴功率
D、效率
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
管路系统的特性曲线是随着（）的增加而上升。
A、流量
B、扬程
C、轴功率
D、效率
参考答案：A
| 阅读理解。 | ||||||||||||||||||||||||||||||||||||
| I started school when I was five. I started this school when I was eleven and I will leave next year when I am sixteen. So I will spend 5 years at this school. The school year starts in September and ends in July. I have a two-week holiday in December, two weeks in April and six weeks in July and August. I also have a one-week holiday in February. In June next year, before I leave this school, I will take exams in 10 subjects. The exams are called GCSE. All children in England have to study English, math, science and a foreign language. They can also choose some other subjects. Here is my timetable for this year. School ends at 3:15 p.m.
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| 1. How old is the writer this year? | ||||||||||||||||||||||||||||||||||||
| A. Seventeen. B. Sixteen. C. Fifteen. D. Fourteen. | ||||||||||||||||||||||||||||||||||||
| 2. How many weeks of holiday does the writer have in a year? | ||||||||||||||||||||||||||||||||||||
| A. 6 weeks. B. 11 weeks. C. 10 weeks. D. 2 weeks. | ||||||||||||||||||||||||||||||||||||
| 3. What class does he begin to have at 9:20 on Wednesday? | ||||||||||||||||||||||||||||||||||||
| A. French. B. Math. C. History. D. Science. | ||||||||||||||||||||||||||||||||||||
| 4. When does the writer have math on Thursday? | ||||||||||||||||||||||||||||||||||||
| A. 10:35. B. 9:20. C. 12:50. D. 1:50. | ||||||||||||||||||||||||||||||||||||
| 5. Which statement is NOT TRUE according to the article? | ||||||||||||||||||||||||||||||||||||
| A. The writer usually has four classes in a day. B. Classes usually begin at 9:20 a.m. C. On Tuesday the writer begins to have geography at 12:50. D. The students at this school usually have lunch at 11:50. |