反应器入口压力升高与下列哪个因素无关()
A.风量升高
B.热气阀开度不够
C.水洗塔堵
D.熔盐温度升高
参考答案:D
Your handwriting is really too bad to read; I can hardly _____ what exactly you are trying to say.
A.give out
B.make out
C.leave out
D.bring out
大气中的NOx主要包括()和(),其中大部分是()。