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【单选题】
把电动势为1.5V的干电池正极直接接到一个硅二极管的正极,干电池的负极直接接到一个硅二极管的负极,则该管A.
工作在导通状态
B.
工作在截止状态
C.
被烧坏
D.
被击穿
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】粉末中可见淀粉粒众多,脐点点状、人字形、十字形或短缝状,粘液细胞中有草酸钙针晶束,导管为具缘纹孔及网纹导管,也有螺纹及环纹导管,纤维少数,细长,壁甚厚,木化。此药材是
A.
山药
B.
浙贝母
C.
天花粉
D.
天麻
E.
百部
【单选题】测试导入单选题39协调性宫缩乏力的特点错误的是
A.
选择1具有节律性、对称性、极性
B.
选择2收缩力弱
C.
选择3持续时间短
D.
选择4间歇时间长
E.
选择5极性倒置
【单选题】"It was the best of times, it was the worst of times, it was the age of wisdom, it was the age of foolishness, it was the epoch of belief, it was the epoch of incredulity, it was the season of Light, ...
A.
antithesis
B.
litotes
C.
simile
D.
understatement
【简答题】We all hope the two companies can reach a _________(妥协).
【简答题】Read the following excerpt from A Tale of Two Cities (1859) by Charles Dickens and upload your voice. It was the best of times, it was the worst of times; it was the age of wisdom, it was the age of f...
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