“机户出资,机工出力,相依为命久矣”的表述表明“机户”与“机工”之间存在着()
A.租佃关系
B.雇佣关系
C.人身依附关系
D.控制与被控制的关系
参考答案:C
The little boy is dirty from head to foot because he______in the mud all morning.
A.has played
B.is playing
C.has been playing
D.was playing
架空乘人装置必须在什么地点设有能自动停车的安全装置?