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【单选题】
Some of the modern ohmmeters have a diode test setting. If you do not have one of these ohmmeters then to test the diode you need to check its resistance in the forward and the reverse direction. These resistances should be ( ).
A.
relatively high in the forward direction and relatively low in the reverse direction
B.
relatively low in the forward direction and relatively low in the reverse direction
C.
relatively low in the forward direction and relatively high in the reverse direction
D.
relatively high in the forward direction and relatively high in the reverse direction
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举一反三
【单选题】在概化理论中,D研究是指
A.
概化研究
B.
决策研究
C.
交叉研究
D.
嵌套研究
【单选题】200km/h≤V容许速度≤250km/h的线路,焊缝凹陷大于()mm时需要及时整治(中级线路工用)。
A.
0.2
B.
0.3
C.
0.5
D.
0.8
【简答题】Homework for Week 2: Dictation: Please turn to page 13 in the book Viewing, Speaking and Listening Textbook (《视听说教程》)Unit1, Section Two, Intensive Listening, Listen to News Item 2 in page 13, and...
【单选题】200km/h≤V容许速度≤250km/h的线路,工作边肥边大于( )mm时需要及时整治。
A.
0.2
B.
0.3
C.
0.8
D.
1
【单选题】(47500)200km/h ≤ V 容许速度≤ 250km/h 的线路,工作边肥边大于() mm 时需要及时整治。
A.
0.2
B.
0.3
C.
0.8
D.
1
【单选题】通气机的apneainterval通常设定在
A.
3~5s
B.
5~8s
C.
7~10s
D.
7~15s
E.
10~20s
【单选题】(47501)200km/h ≤ V 容许速度≤ 250km/h 的线路,焊缝凹陷大于() mm 时需要及时整治。
A.
0.2
B.
0.3
C.
0.5
D.
0.8
【多选题】在社会研究中常用的研究方式有()
A.
调查研究
B.
实验研究
C.
文献研究
D.
问卷研究
E.
实地研究
【简答题】Homework for Week 3: Dictation: Please turn to page 14 in the book Viewing, Speaking and Listening Textbook (《视听说教程》)Unit1, Section Two, Intensive Listening, Listen to Long Conversation in page ...
【单选题】200km/h≤V容许速度≤250km/h的线路,焊缝凹陷大于()mm时需要及时整治。
A.
0.2
B.
0.3
C.
0.5
D.
0.8
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