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【简答题】
A. car B. bus C. man D. time
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皮皮学刷刷变学霸
举一反三
【单选题】如图,已知单杆活塞缸两腔有效面积 A 1 , A 2 ,泵供油量 q ,活塞左右运动速度分别为 v 1 , v 2 。若 A 1 =2 A 2 ,则大腔的流量为 ( ) ;
A.
q
B.
1.5 q
C.
1.75 q
D.
2 q
【简答题】给带词语中带√的字注音 奄奄√一息
【单选题】While some bacteria are beneficial, others are ______in that they cause disease.
A.
detrimental
B.
prodigious
C.
intrusive
D.
mordant
【单选题】如图所示,已知单杆活塞缸两腔有效面积 A 1 , A 2 ,泵供油量 q ,活塞左右运动速度分别为 v 1 , v 2 。若 A 1 =2 A 2 ,则大腔的流量为 ( )。
A.
q
B.
1.5 q
C.
1.75 q
D.
2 q
【多选题】If something is described as sterile ( 无菌的 ), it means that there is ( ). A. No living bacteria B. endospores C. No endospores D. only some bacteria
A.
No living bacteria
B.
endospore
C.
No endospores
D.
only some bacteria
【单选题】在计算机内部,大写字母“ G ”的 ASCll 码为“ 1000111" ,大写字母“ K ”的 ASCll 码为()。
A.
1001001
B.
1001100
C.
1001010
D.
1001011
【单选题】While some bacteria are beneficial, others are harmful in that cause disease.
A.
detrimental
B.
prodigious
C.
intrusive
D.
mordant
【判断题】Some bacteria are essential to our health, but some bacteria can make us very sick.
A.
正确
B.
错误
【单选题】People have done a lot of research on the mechanism which makes some bacteria move.
A.
Right
B.
Wrong
C.
Not mentioned
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