下列不是窗体控件的是_________。A．表 B．单选按钮 C．图像 D．直线

How do North Americans dress? What do they wear in special      

小题1:      

days? In fact, there is very few formal days, though there are some            小题2:

festivals such as Easter, Christmas, Halloween, or Thanksgiving              小题3:      

Day. What people wear depend on their likes and dislikes. On birthday,        小题4:      

some child wear paper party hats. At Christmas, some people wear           

小题5:      

Santa Claus hats. In winter, Canada people usually wear coats, gloves,       小题6:     

boots and hats. It is near the same in northern China. Generally, people         小题7:                     

in Canada and the United States wear suits for work in offices, as            小题8:      

well as for most formal occasions, just as people do in China. People          小题9:      

in cities around a world wear rather similar clothes.                        小题10:      

Sergeant
Our police academy no longer requires its applicants to pass a physical examination before being admitted to the academy. As a result, several candidates with weak hearts arid high blood pressure have been admitted. Hence, we can expect our future police force to have more health problems than our current police force.
Knowledge of each of the following would be relevant to determining the reliability of the sergeant’s prediction EXCEPT whether

A．police officer candidates are screened for high blood pressure before joining the police force.

B．the police officer candidates who are not healthy now are likely to be unhealthy as police officers.

C．graduates of the police academy are required to pass a physical examination.

D．the health of the current police officer candidates is worse than was the health of police officer candidates in the past.

E．(E) a police officer’s health is a reliable indicator of the officer’s performance.

造成胶带输送机的胶带跑偏原因可能是（）。

衍生证券投资基金是一种以衍生证券为投资对象的基金，包括（）。

A．指数基金 

B．认股权证基金 

C．交易所交易基金 

D．上市开放式基金

GK1C机车柴油机支承座支承与调整螺母应留有的间隙为（）

A、5mm

B、10mm

C、15mm