문제 1
다음 중 가연성가스만으로 나열된 것은?
1.
\textcircled{\small\rm A},\textcircled{\small\rm B},\textcircled{\small\rm E},\textcircled{\small\rm H}
2.
\textcircled{\small\rm A},\textcircled{\small\rm D},\textcircled{\small\rm E},\textcircled{\small\rm H}
3.
\textcircled{\small\rm A},\textcircled{\small\rm D},\textcircled{\small\rm F},\textcircled{\small\rm H}
4.
\textcircled{\small\rm B},\textcircled{\small\rm D},\textcircled{\small\rm E},\textcircled{\small\rm H}
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이전
다음
