轧机今年消耗某备件3件/万吨，去年消耗件4件/万吨，今年该备件消耗的增长速度为（）。

北京的四合院按“北屋为尊，两厢次之，倒座为宾，杂屋为附”序列安排。家长住在北房，即正房，它是全院中最高、面积最大的房屋，以基台柱石增加其高度。儿女子孙住在东西厢房。西厢房的高度及宽度，都比东厢房略矮小。这反映出居住具有

A．祖灵祟拜

B．等级礼仪

C．信仰习俗

D．安全舒适

根据短文内容和首字母提示，在下文空格处填入适当的词使短文完整。在答题卡标有题号的横线上，完整写出空缺处所填单词的正确形式。（每空一词）

IF you are a TV fan, you can’t have missed the popular sitcom Home With Kids (《家有儿女》). The l__小题1:__ characters, 17-year-old Xia Xue and 14-year-old LiuXing can r__小题2:__ us of our own behavior or our classmates. We love the  two teenagers, but are they good students? And what m__小题3:__ a good student? “A good student should have good g__小题4:_. Based on their school reports, clever and diligent (勤奋的) Xia Xue is a much b_小题5:__ student than her brother, Liu Xing,” says Wu Hao, 16, in Inner Mongolia. “The boy should work harder at s__ 小题6:__----- since our duty as students is to study well,”

It is generally accepted that getting good scores is i_小题7:__for a student. So to some, being， a good student means getting good marks in your class or even your school. H __小题8:__, Wu also admits that a student’s personality is more important in being a role model student. Many teenagers do not think it is f_小题9:_to judge students by their grades. Take Liu Xing for example. He is bright, good at computers and does everything else well like any other teenager e__小题10:__ studying.

洋地黄类药物最适用的情况是（）

A.扩张型心肌病发生快速室率心房颤动伴肺淤血

B.肥厚梗阻型心肌病

C.二尖瓣狭窄伴肺淤血

D.心包积液伴呼吸困难

E.主动脉瓣狭窄伴肺淤血

直流式空调系统所处理的空气全部来自室外，室外空气经过处理后送入室内，然后全部排出室外。这种系统适用于不允许采用回风的场所。如放射性试验室或散发有害气体的车间。

运输成本在物流总成本中的比例高达( )。

A．60%

B．50%

C．40%

D．30%