轮胎式装载机在起步前宜将铲斗提升离地( )m。
A．1.5 B．0.3C．0.1 D．0.5
参考答案：D
—Have you finished washing your clothes?
—Yes, I'm _________.[ ]
A. hanging up them
B. hang them up
C. putting up them
D. hanging them up
腹部X线见膈下游离气体见于（）
A.消化道穿孔
B.肠梗阻
C.胆囊炎
D.阑尾炎
E.胆结石
