影响理论燃烧温度的因素有哪些?
参考答案:
①鼓风温度;
②鼓风湿度;
③鼓风富氧度;
④喷吹燃料。
She had an advantage over others because she had a good ________ of both Chinese and English.
A.command
B.feeling
C.ability
D.program
《愚公移山》中,愚公为什么要移山()。
A、无事可做
B、大山是他的敌人
C、为了交通便利