HQ-2000型管汇车的吊臂起吊范围是（）。
A.0°—90°
B.-15°—80°
C.-15°—90°
D.0°—80°
参考答案：B
He______in the emergency room when I arrived at the hospital.
A．has been treating
B．has treated
C．had treated
D．was being treated
湿疹常累及
A.表皮
B.真皮
C.皮下组织
D.皮肤附属器
