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【单选题】
电路如图所示，电压表的读数为5V，则电压Uba及元件的作用是（ ）。【图片】A.
U ba =5V ，吸收电能（负载）
B.
U ba=5V ，释放电能（电源）
C.
U ba =-5V ，吸收电能（负载）
D.
U ba=-5V ，释放电能（电源）
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举一反三
【单选题】患者,男,18岁。因外伤造成右臂肱骨中段骨折而急诊人院。检査发现患侧第12掌骨间隙背面“虎口区”感觉消失,抬前臂时呈“垂腕”状态,其原因可能是骨折伴有
A.
尺神经损伤
B.
肌皮神经损伤
C.
正中神经损伤
D.
桡神经损伤
E.
腋神经损伤
【简答题】Although the two players are in the tennis court, they are really good friends ________. A) partners B) enemies C) D) companions
【简答题】Two friends are having a picnic together. 36 names are Jack and Tim. Tim is very lazy (懒的) . 37 the first evening of their holiday, Jack says to Tim, “Here’s some money. Go and buy some meat.” “I’m to...
【简答题】The two friends are quite _______ each other. (commit)
【单选题】Although the two players are ______ on the tennis court, they are really good friends.
A.
partners
B.
enemies
C.
rivals
D.
companions
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