I don't like bread. I won't eat it ______ I am very hungry. [ ]
A. if
B. when
C. unless
答案:C
试举出三种刚性自动化加工设备(系统)。
纪要的文字描述中()字符不能输入。
A.全角/
B.半角/
C.全角\
D.半角\