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【单选题】
按工作能力分类的泵是()
A.
B.
低压泵
C.
齿轮泵
D.
轴流泵
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举一反三
【单选题】某理想气体的绝热系统在接受了环境所做的功之后,其温度
A.
一定升高
B.
一定降低
C.
一定不变
D.
不一定改变
【单选题】实验测的氢气的扩散速率是一未知气体扩散速率的2.9倍。则该未知气体的相对分子质量约为
A.
51
B.
34
C.
17
D.
28
【简答题】按照下发的五十音图笔顺表,每个假名抄写三遍,在最后标上该平假名(草体)的来源汉字(楷体),在纸张最上方写上本人的姓名;并对姓名进行罗马字标注;规范抄写,认真拍照,拍照上传至作业区;30分 五十音图清音表朗读一遍,进行录音,录音最前面请说明时间(准确到月日小时分),说明本人的姓名;30分; 浊音表朗读一遍,进行录音,录音最前面请说明时间(准确到月日小时分),说明本人的姓名;30分; 选做题,预习超星...
【单选题】某理想气体的绝热系统在接受了环境所做的功之后,其温度( )。
A.
一定升高
B.
一定降低
C.
一定不変
D.
不一定改变
【简答题】根据你所听到的短文内容,从A、B、C三个选项中选出正确答案。 1. Today in class the teacher will tell the students . [     ] A. something about Mount Tai B. something about the Great Wall C. something about the Summer Palace 2. The...
【单选题】A MENTORING (导师制) program is giving life changing opportunities to Banbury youth. Young Inspirations was founded two years ago to provide mentoring sessions for students and unemployed young adults ag...
A.
build up their confidence at school
B.
find work experience o pportunities
C.
improve their social skills for the future
D.
play an active role in the change of society
【单选题】( )11.—We will build a subway in Fuzhou before 2014. —Wow , ________ ! Will it pass our place?
A.
what an excited news
B.
how excited the news is
C.
what exciting news
D.
how exciting news
【简答题】某理想气体的绝热系统在接受了环境所做的功之后,其温度一定 。
【单选题】一个袋中有若干个红色和蓝色小球,如果从袋中取出一个红球,那么袋中剩下小球的1/7是红色的。把这个小球放回去,另取出2个蓝球,那么剩下球的1/5为红色球。袋中原来有多少个小球?( )
A.
15
B.
22
C.
30
D.
50
【单选题】A MENTORING (导师制) program is giving life changing opportunities to Banbury youth. Young Inspirations was founded two years ago to provide mentoring sessions for students and unemployed young adults ag...
A.
build up their confidence at school
B.
find work experience o pportunities
C.
improve their social skills for the future
D.
play an active role in the change of society
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