玻璃钢高压管道,固定支墩上表面应低于地面(),防止车辆重压损伤管体。
A、80-100mm
B、100-150mm
C、150-200mm
D、150-250mm
参考答案:C
---Sally is ill. Do you know what’s the matter with her?
---Poor girl. Her illness is the_________ of eating unhealthy food.
A.cause
B.reason
C.result
D.end
旅游者食物中毒时送医院救治,要求医生开具诊断证明,写明中毒原因。( )