端口电压不变,并联的负载电阻愈多,则总电阻愈小,电路中总电流和总功率也就愈大。
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不定积分的第二换元法根式代换和三角代换都是为了消除根号,方便使用积分公式求原函数( ).
A. 对
B. 错
Work in pairs. The first person reads what Sheila says, and the second person gives a possible appropriate answer from learned materials or using his/her own words. You may want to write your responses on a piece of paper.Example:Student A:Hello. May I sit next to you?Student B:Of course you can.orHi, my name is…
康有为在其上光绪帝的第一书中提出了____________________________的政治主张。
下列不属于路由选择协议的是()。A. RIP B. ICMPC. BGP D.OSPF
A
B
C
D