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【单选题】
关于一次除尘器,下列说法不正确的是()。
A.
一次除尘器安装在锅炉与循环风机之间
B.
热惰性气体经过一次除尘器时经撞击和重力作用,使粗颗粒在此沉降下来
C.
一次除尘器下部有排粉,冷却套管冷却后,排入粉焦刮板运输机
D.
一次除尘器由钢结构制作,内衬断热砖和黏土砖,要求严密、耐高温、耐磨损
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举一反三
【单选题】In the reading room, we found her ________ at a desk, with her attention ________ on a book.
A.
seating; fixing
B.
seated; fixed
C.
sitting; fixing
D.
to sit; fixed
【简答题】现有4盒磁带,有几种包装方式?你认为哪种方式更省包装纸?(重叠处不计,画出示意图)
【单选题】超声雾化罐内放药液稀释至
A.
2~5ml
B.
6~10ml
C.
10~20ml
D.
25~40ml
E.
30~50ml
【单选题】有2盒磁带,用下面三种方式包装,第(  )种方式更省包装纸.
A.
B.
【单选题】超声雾化罐内放药液稀释至( )
A.
2-5ml
B.
6-10ml
C.
30-50ml
D.
10-20ml
【单选题】若孔、轴装配之后,实现满足极限间隙,则( )
A.
)结合合用,孔、轴合格
B.
)结合合用,孔、轴不一定合格
C.
)结合合格,孔、轴合格
D.
)结合合格,孔、轴不一定合格
【单选题】有两盒滋补品,用下面三种方式包装,你认为最省包装纸的是 [      ]
A.
B.
【简答题】Please remain __________ until the plane has come to a complete stop. A.to seat B.to be seated C.seating D.seated
【单选题】I found many people ________ on the benches at the end of the day,chatting.
A.
sitted
B.
sitting
C.
seating
D.
seat
【单选题】The teacher was surprised to see lots of people_____at the back of the room _____ worried. [     ]
A.
seating;looked
B.
seated;looking
C.
sitting;looked
D.
sat;looked
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