燃烧炉阻火器堵的工艺现象是（）。
A、酸性气流量无
B、炉膛温度下降
C、火嘴的火焰弱
D、阻火器前压力下降
参考答案：A, B, C
请根据中英文提示或句意，写出句中所缺单词，使句子通顺。(5分）
小题1:My parents love sports, e_________ walking and jogging.
小题2:There are many __________(秘书) in the big company.
小题3:The rubbish bin is full of _________(rubbish) .Who will clean it up?
小题4:The ________(采访者) often ask a lot of questions about ORBIS.
小题5:It’s the ________(right or proper) way to solve the difficult problem.
Si j’avais à choisir un lieu de voyage, je (aller) _____à Pékin.
