1.

The range of the standing wave ratio is

A. 0 < S < 1
B. -1 < S < 1
C. 1 < S < ‚àû
D. 0 < S < ‚àû
Answer» D. 0 < S < ‚Äö√Ñ√∂‚àö‚Ć‚àö¬™


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