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【简答题】
若 A 点电位 V A = 12V , B 点电位 V B = 4V ,C点为参考点,则电压 U AB = V, U BC = V, U AC = V 。若B 点为参考点, 则 A 点电位 V A = V , C 点电位 V C = V 。
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【多选题】Which of the following descriptions about rice are correct?
A.
Rice was firstly domesticated along the Yangtze River Valley in China.
B.
The piles of rice grains found at Hemudu site (河姆渡遗址) prove that China is one of the key birthplaces of rice in the world.
C.
The yield of rice had been much less than that of millet till Han Dynasty because there were few people living in the south at that time.
D.
The population growth in the south in Song Dynasty led to the planting of rice on a large scale.
E.
With the yield of rice exceeding all other grain crops, Yangtze River Valley became the economic center of China.
【简答题】The Best Rice Cookers ☆☆☆☆Tefal Automatic 2W3 Classic Rice Cooker One of the largest rice cookers on the market, with a 2-litre capacity （容量）（up to 12 servings）．It looks 'rather utilitarian', but give...
【简答题】用Windows7的记事本程序所创建的文件的扩展名是
【单选题】关于肩关节前屈的活动度测量下列描述不正确的是
A.
轴心为肩峰
B.
固定臂平行于躯干
C.
移动臂平行于前臂长轴
D.
肩关节前屈活动范围为0-170°
E.
读数时视线应与尺平行
【单选题】下列关于肩胛肱关节节律的描述不正确的是()
A.
肩关节外展>30°时,肩关节运动与肩胛骨旋转比为2:1。
B.
肩关节屈曲>60°时,肩关节运动与肩胛骨旋转比为2:1。
C.
肩关节屈曲>90°时,肩关节运动与肩胛骨旋转比为2:1。
D.
肩关节外展<30时,肩胛骨则固定于胸廓上。
E.
肩关节屈曲<60°时,肩胛骨则固定于胸廓上。
【单选题】What will happen in the rice market if buyers know there may be a rice shortage in the near future?
A.
The supply of rice will increase.
B.
The demand for rice will decrease.
C.
The demand for rice will increase.
D.
The demand for rice will be unaffected.
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