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【多选题】
大数据有4个特性,分别是哪4个特性?
A.
Volume (规模性)
B.
Variety (多样性)
C.
Velocity (高速性)
D.
Value (价值性)
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参考答案:
举一反三
【单选题】在图示的轮系中,已知各轮齿数为z1=20,z2=30,z3=40,z4=60。试求该轮系的传动比i14。【图片】
A.
1
B.
2
C.
3
D.
4
【单选题】☆1198.西餐中汤汁较多的菜肴多配( )。
A.
米饭
B.
炸土豆条,烤土豆
C.
面条
D.
应时蔬菜
【单选题】假设肺通气量为7000ml/min,呼吸频率为20 次/分,无效腔容量为100ml,每分心输出 量为5000ml 时,其通气/血量比值为
A.
1.0
B.
0.7
C.
0.8
D.
0.9
【单选题】在图示的轮系中,已知各轮齿数为z1=20,z2=30,z3=40,z4=80。试求该轮系的传动比i14。【图片】
A.
1
B.
2
C.
3
D.
4
【多选题】选词填空
A.
suppose
B.
trust
C.
tell a lie
D.
promised
E.
silent
F.
came to herself When we returned to the classroom, the teacher asked us to keep ________. At last, she __________,but she couldn't tell what had happened. This morning the teacher________that he would play games with us . The boy promised his father not to _________any more. I don't __________he is right. You can't________her, she cannot take care of your baby.
【单选题】在图示的轮系中,已知z1=20,z2=40,z2'=20,z3=30,z'3=20,z4=40,则轮系的速比i14=_______。【图片】
A.
2
B.
3
C.
4
D.
6
【单选题】假设肺通气量为7000ml/min,呼吸频率为20次/min,无效腔容量为100ml,每分心输出量为5000ml时,通气血流比值为
A.
0.7
B.
0.8
C.
0.9
D.
1.0
E.
1.4
【单选题】在图示的轮系中,已知z1=20,z2=40,z2'=20,z3=30,z'3=20,z4=40,则轮系的速比i14=_______。【图片】
A.
2
B.
4
C.
6
D.
8
【判断题】Don't keep silent during the meeting. I want to hear your opinion
A.
正确
B.
错误
【判断题】Keep silent! I don't want to hear sound. 这句话表述正确吗?
A.
正确
B.
错误
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