Question 1 of 40
Walking Character
2%
Princess Right

대부분의 주택 소유자는 얼마나 자주 전문가를 통해 HVAC(냉난방) 점검을 예약해야 할까요?

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A 5년에 한 번
B 연 1~2회
C 고장 났을 때만
D 매달
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