关于半导体测温元件说法正确的是（）。 A.半导体热敏电阻随温度的升高电阻值上升 B.

Any introduction to Peking Opera would not be complete without telling of Mei Lanfang. During his stage life, he combined the traditions of the past with his own creations, shaping a style of his own and giving birth to “The Mei Lanfang School”. He was also the first artist to introduce Peking Opera to an overseas audience, making it popular to the world.

Mei Lanfang began his stage life at the age of 8. His teacher said he showed little hope because of his boring eyes. To improve this, he exercised them day after day. Thanks to his efforts, he managed to change his dull eyes into a pair of bright and expressive eyes and win national fame before the age of 20.

In over 50 years on the stage, Mei Lanfang played no less than 100 different characters in the performance. He also wrote many new plays, designing the dances himself. The many dances he created form part of the great treasure that he left to Peking Opera.

In 1930, Mei Lanfang started on a successful US tour. There his brilliant performances impressed the audience, making them realize that Peking Opera was a theatrical form of great value.

小题1:Mei Lanfang was the first artist to introduce Peking Opera to ________.

A．China

B．audience

C．the world

D．schools小题2:How long did it take Mei Lanfang to exercise his eyes into bright and expressive?

A．About 8 years.

B．About 10 years.

C．About 12 years.

D．About 14 years.小题3:What is the main idea of the passage?

A．The history of Peking Opera.

B．Mei Lanfang’s early stage life.

C．The performance of Peking Opera by Mei Lanfang.

D．Mei Lanfang’s great contributions to Peking Opera.

在影响物流包装件特性的综合因素中，不属于管理特性的因素是（）.

A.周转次数

B.技术水平

C.货架寿命

D.销售范围

如图所示，重G＝100N的物体挂在水平轻杆OA的O端，A端与竖直墙铰链，OB是与水平杆成30°的细绳将杆O端拉住，则由于物体的重力造成的OA杆与OB绳受的力各多大？

TBA/22图案校正伺服马达有（）个位置.

A、999

B、3

C、255

若体系下沉速度很小，则该体系具有沉降稳定性。