통신보안항공무선통신사 · 2010년02월21일 · 60/70
60.An electrical current flow which reverses direction at regular time intervals is called;
1
Reverse current
2
Alternating current정답
3
Direct current
4
Electric current
해설
2. Alternating current = 교류 1. Reverse current = 역(방향) 전류 3. Direct current = 직류 4. electric current = 전류