电气焊房应设置“()”标志。
下列方法不能提高往复压缩机排气量的是() ["提高压缩机的转速","提高入口气体压力","降低入口气体温度","增大气缸余隙"]
证见发热微恶寒,头痛少汗,胸闷胸痛,咳甚鼻衄,口微渴,苔薄白舌边尖红,脉浮数等,治宜银翘散加减,其方法是:(). ["加杏仁","去荆芥、豆豉","加白茅根、侧柏炭、栀子炭","加天花粉","加黄连"]
风温的发病,与哪些因素有关?() ["感受风温病邪","人体与外界环境不相适应","素体虚弱,抗病能力减弱","冬令应寒反而温","冬令气候过寒"]
发球方赢了4分保住发球局,那么该球员最多发了()分球。 ["4","5","6","7"]
煤矿常用的煤质指标有哪些?