混合煤气一般由（）和（）混合而成。

阅读理解。

     Yao Ming, the center of the Chinese National Men's Basketball Team, served the Houston Rockets in 2002 in NBA. The 2.26m, 120kg center became the first player to come from a foreign team.

     Yao Ming was born in Shanghai in September, 1980. His mother was a center and captain (队长)of

the Chinese National Women's Team. His father played basketball, too.

     Yao Ming is widely known in China. He came to be a very important basketball player in CBA. It's

short for China Basketball Association  (联赛). During the 2000-2001 season, he got 27.1 scores (得分)

for the Shanghai Oriental (东方)Sharks in every match.

     Yao Ming joined the Houston Rockets in October, 2002. He said it was a new start in his basketball

life. He would do his best to learn from the NBA and improve (提高)himself.

     Sport analyst (分析家) Bill Walton said,"Yao Ming has the potential (潜力) the capability (能力) of

changing the future of basketball."

1.The Houston Rockets is the name of a _____ team.

A. table tennis

B. volleyball

C. basketball

D. golf

2.Both Yao Ming's father and mother were _____.

A. football players

B. basketball players

C. the centers of the Chinese National Team

D. the captains of the Chinese National Team

3.Yao Ming _____ in CBA during the 2000-2001 season.

A. does well

B. is good

C. was good

D. did well

4.Yao Ming _____ the Houston Rockets in October, 2002.

A. did his best to join

B. was well-known in

C. became a member （成员）of

D. liked

5.Sport analyst Bill Walton thought Yao Ming was able to _____.

A. learn from the NBA

B. change the future of basketball

C. improve himself

D. became the captain of the Houston Rockets

患者，女性，25岁，因车祸致小腿胫前皮肤缺损，7cm×9cm大小，胫骨皮质外露，下列哪项描述不正确

A．选用局部筋膜瓣和游离植皮修复

B．选用局部皮瓣修复

C．选用游离皮瓣移植修复

D．选用游离皮肤移植术修复

E．选用小腿岛状动脉皮瓣修复

下列情形不属于工伤的是( )。

A．患职业病者

B．在上下班途中，机动车事故中的受害者

C．在工作时间和工作场所内，因工作原因受到事故伤害者

D．下班后，在工厂逗留打闹引起伤亡

髓鞘破坏而轴突保持相对完整的病变称为（）

A.节段性脱髓鞘

B.轴突变性

C.神经元变性

D.Wallerian变性

E.神经元坏死

负荷试验的目的是熟悉操作要领，观察机械运转状况，试验起动性、操纵和摔制性，必要时进行调整。