挖掘机按传递动力的传动装置方式，可分为（）等几种。
A.机械传动
B.电传动
C.半液压传动
D.全液压传动
参考答案：A, C, D
_____ you have tried it on, you can't imagine how pretty the new style skirt is.[ ]
A. Because
B. Although
C. Unless
D. When
腰高
