变比不同的两台变压器并联运行，平衡电流取决于两台变压器的变比差和（）。

What are you going to do if you are in a burning house? How will you escape? Do you know how to save yourself? Please read the following passage.

Escaping a fire is a serious matter. Knowing what to do during a fire can save your life. It is important to know the ways you can use and show them to everyone in the family, such as stairways and fire escapes, but not lifts.

From the lower floors of the buildings, escaping through windows is possible, learn the best way of leaving by windows with the least chance of serious injury.

The second floor window is usually not very high from the ground. An average (平均高度的) person, hanging by the finger-tips will have a drop of about six feet to the ground. It is about the height of an average man. Of course, it is safer to jump a short way than to stay in a burning building.

Windows are also useful when you are waiting for help. Be sure to keep the door closed. Or smoke and fire may be drawn into the room. Keep your head low at the window to be sure you get fresh air rather than smoke that may have leaked (渗) into the room.

On a second or third floor, the best windows for escape are these which open onto a roof. From the roof a person can drop to the ground more safely. Dropping onto cement (水泥) might end with injury. Bushes and grass can help to break a fall.

小题1:It is more important to ________.

A．put out the fire in the burning house

B．Know the ways to escape the fire

C．jump off a burning house

D．keep the door closed小题2:It is possible to escape through the windows ________.

A．if you have a long rope

B．if you are strong enough

C．if you live on a lower floor

D．if there are some bushes on the ground小题3:Which of the following escaping way is NOT right?

A．You can escape through stairways.

B．You can choose fire escapes.

C．Escape from the windows which open onto a roof.

D．Use a lift to come down at once.小题4:Open the window so that ________ if the building is on fire.

A．you can get fresh air

B．you can call for help

C．you can easily jump off

D．you can be seen first小题5:The best title for the passage is ________.

A．Escaping from the Windows

B．Save Yourself in the Burning House

C．Knowledge on Fire

D．Waiting for Help

填制国际航空货运单时，若运费到付，则货币栏内应填（）代号。

A.美元

B.目的地所属国货币

C.始发站所属国货币

D.可支付的任何国货币

《行政许可法》规定，对于有数量限制的行政许可，两个以上申请人申请均符合法定要求的，行政机关应当( )

A．根据发出申请的先后顺序作出许可决定

B．根据受理申请的先后顺序作出许可决定

C．均不给予行政许可

D．抽签决定许可决定

以下不属于典型抗精神病药物的是（）

A.吩噻嗪类

B.硫杂蒽类

C.丁酰苯类

D.苯甲酰胺类

E.二苯二氮_桌类

导致溶剂脱重塔顶产品不合格的主要原因有哪些？