圆的周长是直径的______倍；或是半径的______倍．如果用C表示圆的周长，

单词拼写（共10 小题；每小题1分，满分10分）

小题1:_________ (星期四)is the day of the week after Wednesday and before Friday.

小题2:The article has been_________ (删除) before I could read.

小题3: He knows nothing about our new plan because he has been ___ (缺席) from work for days.

小题4:She always ________ (抱怨 ) about her husband.

小题5:We’re looking forward to _________ (收到)your reply as soon as possible.

小题6:Girls and boys should be treated _________ (平等地) in seeking employment.

小题7:The building was_______(毁坏)in the war, and it was rebuilt in 1960.

小题8:The custom has been kept up for ______ (十年).

小题9:He is lucky to win a_______(奖学金)to study further at Stanford.

小题10: Measures have been taken to clean the _________ (受污染的) rivers.

有关静脉采血步骤中，下列哪项是错误的（）

A.穿刺时针头斜面和针筒刻度向上

B.扎止血带→穿刺，见回血后→解除止血带→抽血

C.抽血完毕后，立即将血液通过针头沿管壁缓缓注入容器中

D.注射器中最后带有血泡的血不宜进入

E.肘正中静脉采血时，肘关节应伸直

使用推锉进行锉削能获得较平的加工表面和较小的表面粗糙度。( )

人的本质是什么？如何理解？

对燃油应急放油系统的最基本要求之一是：（）.

A.应急放油所需要的时间不得超过10分钟。

B.燃油必须从两侧翼尖的放油口排出。

C.燃油必须从机翼根部的放油口排出。

D.放油时一定不能有起火的危险。