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【判断题】
电流所经过的路径叫做 电路 ,通常由 电源 、 负载 和 中间环节 三部分组成A.
正确
B.
错误
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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】在实验室中,如果将浓硫酸沾到皮肤或衣服上,应立即 ,然后涂上3%-5%的 溶液。
A.
用水冲洗干净；碳酸氢钠
B.
用水冲洗干净；氢氧化钠
C.
用硼酸冲洗干净；碳酸氢钠
D.
用硼酸冲洗干净；氢氧化钠
【单选题】When it comes to honesty and sincerity, saying is a must (words are usually enough) and apologizing even for small things, is important.
A.
China (Eastern)
B.
USA (Western)
【单选题】When it comes to honesty and sincerity, words are NOT enough (doing is a must) and apologizing even for small things, isn’t as important.
A.
China (Eastern)
B.
USA (Western)
【单选题】电压的单位是( );在国际单位制中,电压的常用单位还有( )和( )。
A.
安培(A)
B.
伏特(V);
C.
毫安 (mA);
D.
微安(μA);
E.
千伏(kV)
F.
千安(kA);
G.
毫伏(mV);
【单选题】下列说法不正确的是 [ ]
A.
如果不慎将碱液沾到皮肤上，应立即用水冲洗后再涂上硼酸溶液
B.
氢氧化钠中混有少量碳酸钠，可用稀盐酸除去
C.
酚酞和NaOH混合溶液中加稀硫酸红色褪去，说明硫酸与氢氧化钠发生了反应
D.
熟石灰涂在墙体表面后变硬，原因是熟石灰与空气中CO 2 反应生成了坚硬的碳酸钙
【简答题】Explain the following statement with at least 50 words. Illustrate your answer with evidence and reasoning. Sincerity, honesty, and a straightforward manner are more important than special talent or p...
【简答题】Translate the following sentences from English to Chinese. A new study suggests that sincerity and honesty are keys to good health.
【简答题】电压的单位是( );在国际单位制中,电压的常用单位还有( )和( )。A. 安培(A); B. 伏特(V); C. 毫安 (mA); D. 微安(μA); E. 千伏(kV); F. 千安(kA); G. 毫伏(mV);
【简答题】Explain the following statements with at least 50 words. Illustrate your answer with evidence and reasoning. Sincerity, honesty, and a straightforward manner are more important than special talent or ...
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