生产类型按接受任务的方式划分有存货型生产类型和()。
参考答案:订货型生产类型
Everyone knows that________ is dangerous to play with fire, but________ is difficult is to prevent children from playing with fire.
A.it; what
B.what; what
C.what; it
D.it; it
湖北民歌《龙船调》是一首()唱歌曲。
A.齐
B.对
C.重
D.独