单选题下列测量中属于间接测量的是()。A用万用欧姆挡测量电阻B用电压表测量已知电阻上消耗的功率C用逻辑笔测量信号的逻辑状态D用电子计数器测量信号周期
单选题
下列测量中属于间接测量的是()。
A
用万用欧姆挡测量电阻
B
用电压表测量已知电阻上消耗的功率
C
用逻辑笔测量信号的逻辑状态
D
用电子计数器测量信号周期
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