电力机车劈相机的起动采用的是（）起动法起动。

抛物线y²=4x上一点P到焦点F的距离是10，则P点的坐标是（　　）

A．（9，6）

B．（6，9）

C．（±6，9）

D．（9，±6）

“心理障碍大多为幼年压抑的潜意识冲突而引起”。持这种观点的学派是（）。

A.心理生理学派

B.人本主义学派

C.认知行为学派

D.行为主义学派

E.精神分析学派

接头必须采用悬接：直线段应对接，相对错距不大于（），曲线段应错接，相对错距不小于2m。

After Man has dreamed about flying for a long time. Michael Moshier is a dreamer. He invented the Solo Trek.

The Solo Trek had a 120 horsepower engine with twin fans. Only one person flies. As you fly above the roofs, you lean a little forward. You can see everything under you. You are flying like Superman.

Michael Moshier looked at the jet belt and the rocket belt that was developed 20-30 years ago. Nothing ever came from them. People still can’t fly.

Inventors have tried to make it easy for people to fly. Paul Moller has been working on his flying car for 30 years. He now says it is ready for tests. It would take off and land vertically, go 600 miles an hour, and deliver 20 miles to the gallon. A computer would do the actual flying. He says it could be sold next year for about a million dollars.

NASA is working with Moshier to help develop his flying machine. The first users are likely to be military.

It’s been 50-years since Robert Fulton invented his airphibian, a flying car. It flew, and is now in the Smithsonian Museum.

Getting dreams to fly is never easy.

An analogy was used to compare the way one could fly in the Solo Flyer to ()

A. how a helicopter flies

B. how the Jetsons fly

C. how the airphibian flies

D. how Superman flies