Be careful when you move jet pipes or exhaust cones that have insulating blankets. 当你移动有绝缘毯子的喷射管或排气锥时要/Jv。。
A.Be careful when you move jet pipes or exhaust cones having insulating blankets. B.Be careful when you move jet pipes, or exhaust cones have insulating blankets. C.Jet pipes have insulating blankets. Be careful when you move exhaust cones.正确答案A
