chemoresistive gas sensor是什么?主要是不懂chemoresistive是什么意思?

chemoresistive gas sensor是什么?主要是不懂chemoresistive是什么意思? gas gas SAM S CLUB GAS STATION怎么样 Paweena Oil & Gas S.A是什么? and when it needs gas,it's mine 翻译 What's more,less harmful gas is produced. oil gas gas是什么意思? gas是什么意思? gas是什么意思? depolarised gas flared gas GAS怎么样 gas是什么意思? ___the safety of the gas,the government has checked the city's gas supply system.A.to ensureB.ensuringC.Having ensuredD.To have ensured选哪个? ___the safety of the gas,the government has checked the city's gas supply system.A.to ensureB.ensuringC.Having ensuredD.To have ensured.为什么不选D Please switch on the gas tap and let's cook dinner.