水梁靠水冷和汽化冷却保证强度，带走的热量最大的是（）。 A.水冷系统 B.汽化冷却系

阅读理解。

      Liesl Tesch is an Australian. She's a great sportswoman, but she can't walk. She is a wheel-chair(轮椅) basketball  player.  All  the women other team  are wheel  chair sportswomen. Liesl and her team

members can't run or jump, but they can play basketball well. Her team is a winning team.They play in

countries  all  over  the  world. Othercountries  with  women's  wheelchair basketball  teams  are New

Zealand, Canada and Japan.

     Tom Smith is from the  United States  can't walk, but  he can race in marathons(马拉松). Tom can

race in his wheelchair.  His wheelchair can go very fast. It can go 35 miles per hour. Tom can also play

basketball and baseball,but racing is his favorite sport.

     Wheelchair sportsmen and sportswomen don't say, "I can't. " They say, "I can do it. "       

1. Liesl is from ___________.           .             

A. China                

B. Australia

C. Canada                

D. America                                 

2. Liesl can play ___________.

A. football              

B. volleyball

C. basketball          

D. baseball

3. Liesl can't______________.              

A. walk                  

B. talk

C. see                    

D. do sports

4. Tom's wheelchair can go____________ miles per hour.             

A. twenty-five          

B. thirty-five

C. forty-five            

D. fifty-five

5. Tom's favorite sport is_________________.

A. basketball            

B. volleyball

C. baseball              

D. racing

90%以上金黄色葡萄球菌均存在一种能与IgG的Fc段结合的抗原，称（）。

为保证齿轮传动瞬时角速度之比恒定，齿廓曲线必须采用渐开线。

实际胶质