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【简答题】
晶闸管-电动机调速系统(简称V-M系统),图中VT是________,通过调节触发装置 GT 的________来移动________即可改变整流电压Udo ,从而实现平滑调速。
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参考答案:
举一反三
【简答题】按前面两个图的规律,在第三个图的空白处填上合适的图形。
【单选题】下列说法中与INCOTERMS2010相符的是()
A.
FCA是货交承运人
B.
FAS是装运港船上交货
C.
FCA仅适用于海运
D.
FOB适用于所有运输方式
【单选题】用棋子按下列方式摆图形,第一个图形有1枚棋子,第二个图形有5枚棋子,第三个图形有12枚棋子,…依此规律,第7个图形比第6个图形多(   )枚棋子 …… 第1个 第2个 第3个 第4个
A.
20        
B.
19        
C.
18        
D.
17
【简答题】Watch the video again. Fill in the blanks. 10_U6 My Story.mp4 1.Dan: I (need / like) to go to the gym about three or four times a week. 2.Jonathan: My favorite pastime is (play/ playing) drums. 3. Gia...
【简答题】观察下面三个天平,如图,则第三个天平中缺少的重物的图形是______.
【单选题】What happens before the writer goes to bed?
A.
The cat is carried out complaining bitterly.
B.
She walks out intensely angry.
C.
She keeps trying to come straight in again.
D.
Once outside she starts making a noise so that she is readmitted.
【单选题】It was 7:00 am in Kyoto, Japan, and the taxi company had just called a second time to say they couldn't find my house. Once again I spelt out directions even a blind person could follow. I glanced imp...
A.
He wanted to catch a plane.
B.
He was unable to find the airport.
C.
There were few taxis in town.
D.
All the buses stopped because of the rain.
【单选题】Our generation has made such immense discoveries and achieved undreamed enrichments of the outside of life, that it has lost touch with the inside of life. It has forgotten the true riches and beautie...
A.
Man's Need for Wisdom
B.
The Inside of life
C.
Heart vs. Mind
D.
Universal Ideals
【单选题】( )主要有聚苯板、加气混凝土、泡沫塑料板、膨胀珍珠岩板、膨胀蛭石板等。
A.
散料式保温材料;
B.
现场浇筑的拌合物式保温材料;
C.
涂刷式保温材料;
D.
板块式保温材料。
【单选题】某患者,来自山区,常年以玉米为主食,查体发现口角炎、舌炎、周围神经炎,该患者最可能患有:
A.
干性脚气病
B.
湿性脚气病
C.
混合型脚气病
D.
口腔 -生殖综合征
E.
癞皮病
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