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【简答题】
听下面一段对话,回答第1~3三个小题。 1. What's the relationship (关系) of the two speakers in the talk? [     ] A. Teacher and student B. Mother and son C. Classmates 2. How did Bob's family go to Yangshuo? [     ] A. By bike B. By car C. By train 3. When will they take the trip? [     ] A. After the exam B. In ten hours C. In three days 听下面一段对话,回答第4~5两个小题。 4. What is the talk mainly about? [     ] A. Today's newspaper B. A disease among young kids C. How to give advice 5. According to the woman, what makes so many children ill? [     ] A. Children are too young. B. The government is doing nothing. C. The weather is too wet and warm. 听下面一段对话,回答第6~8三个小题。 6. Where did the dialogue take place? [     ] A. In a hospital B. In a bookstore C. In a restaurant 7. When did the woman buy the tape? [     ] A. On February 9 B. On February 11 C. On February 10 8. How did the woman feel after she heard what the man said? [     ] A. Angry B. Happy C. Moved 听下面一段对话,回答第9~11三个小题。 9. Why did Luke phone Alice? [     ] A. He wanted to ask how to write a report. B. He wanted to stop John taking his phone to school. C. He wanted a topic for the class meeting. 10. What can we learn from the talk? [     ] A. Some students play with their phones in class. B. Luke does not like Alice's idea. C. Luke still has a lot of time to prepare for the discussion. 11. How will the discussion be held? [     ] A. In groups B. On line C. On the phone
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参考答案:
举一反三
【简答题】在不定积分 中, f(x)dx 称为( )
【单选题】下列不属于评价学前儿童健康的形态指标的是( )。
A.
身高
B.
体重
C.
血压
D.
头围
【简答题】∫ln(1+x 2 )dx,求不定积分(其中a、b为常数):
【单选题】经静平衡的回转件( )动平衡的。
A.
不是
B.
一定是
C.
不一定是
【单选题】气缸的横向磨损大的最主要原因是由于
A.
粘着磨损
B.
磨粒磨损
C.
侧压力
D.
腐蚀磨损
【判断题】经静平衡的回转件一定也是动平衡的。
A.
正确
B.
错误
【单选题】下述哪种炎性介质具有化学趋化作用
A.
组胺
B.
C5a.
C.
C3b
D.
缓激肽
E.
活性氧代谢产物
【判断题】动平衡时满足静平衡条件,所以经过动平衡的回转件一定是静平衡的;同时静平衡的回转件一定是动平的。()
A.
正确
B.
错误
【单选题】下列关于振动、噪声测量的叙述中,正确的是()。
A.
压电式加速计是非接触式测量仪器
B.
磁电式速度传感器工作时不需要电源
C.
在滚动轴承磨损和损伤的诊断中,最有效的方法是噪声检测法
D.
人耳的听觉仅与声压有关,与频率无关
【简答题】设f(x)的原函数为e x 2 ,求不定积分∫x 2 f"(x)dx.
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