单选题An accidental path of low resistance, allowing passage of abnormal amount of current is known as a/an（）.Aopen circuitBshort circuitCpolarized groundDground reference point
单选题
An accidental path of low resistance, allowing passage of abnormal amount of current is known as a/an（）.
A
open circuit
B
short circuit
C
polarized ground
D
ground reference point
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