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【简答题】
水资源利用效率是（__）效率和（__）效率的统一。
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举一反三
【单选题】The brain works much more efficiently when ______ .
A.
both sides of the brain are used equally
B.
the left side is fully developed
C.
scientists work on it
D.
the fight side is fully developed
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【简答题】简述驱动桥桥壳的垂直弯曲疲劳试验方法。
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【单选题】An agreement was made in June when both sides met for the first time in 21 years, ______ by another meeting for further cooperation.
A.
following
B.
to follow
C.
having followed
D.
followed
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【单选题】一个平面自由构件的自由度应为____。
A.
1
B.
2
C.
3
D.
6
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【判断题】通过信号机的显示距离不少于 1000m ,在最恶劣条件下不得少于 400m 。( )
A.
正确
B.
错误
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【单选题】一平面机构的自由度为2，该机构若要具有确定相对运动，则其主动件应有（）个。
A.
0个
B.
1个
C.
2个
D.
3个
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【单选题】一平面低副机构的自由度为1,构件数为N,则该机构所具有的绝对瞬心的数目应该是( )。
A.
N个；
B.
N-1个；
C.
N/2个；
D.
1个。
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【多选题】Post ( 1983 年)根据撕裂程度将其分成哪几类:
A.
撕裂口＜ 1 ㎝者为小撕裂
B.
撕裂口 1 ～ 3 ㎝者为中度撕裂
C.
撕裂口 3 ～ 5 ㎝者为大撕裂
D.
撕裂口＞ 5 ㎝者为特大撕裂
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【单选题】The brain works much more efficiently when __.
A.
both sides of the brain are used equally
B.
the left side is fully developed
C.
scientists work on it
D.
the right side is fully developed
查看完整题目与答案
【单选题】The city is very beautiful. There are many trees on ______ sides of streets. [     ]
A.
each
B.
all
C.
both
D.
neither
查看完整题目与答案
相关题目：
【单选题】The brain works much more efficiently when ______ .
A.
both sides of the brain are used equally
B.
the left side is fully developed
C.
scientists work on it
D.
the fight side is fully developed
查看完整题目与答案
【简答题】简述驱动桥桥壳的垂直弯曲疲劳试验方法。
查看完整题目与答案
【单选题】An agreement was made in June when both sides met for the first time in 21 years, ______ by another meeting for further cooperation.
A.
following
B.
to follow
C.
having followed
D.
followed
查看完整题目与答案
【单选题】一个平面自由构件的自由度应为____。
A.
1
B.
2
C.
3
D.
6
查看完整题目与答案
【判断题】通过信号机的显示距离不少于 1000m ,在最恶劣条件下不得少于 400m 。( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】一平面机构的自由度为2，该机构若要具有确定相对运动，则其主动件应有（）个。
A.
0个
B.
1个
C.
2个
D.
3个
查看完整题目与答案
【单选题】一平面低副机构的自由度为1,构件数为N,则该机构所具有的绝对瞬心的数目应该是( )。
A.
N个；
B.
N-1个；
C.
N/2个；
D.
1个。
查看完整题目与答案
【多选题】Post ( 1983 年)根据撕裂程度将其分成哪几类:
A.
撕裂口＜ 1 ㎝者为小撕裂
B.
撕裂口 1 ～ 3 ㎝者为中度撕裂
C.
撕裂口 3 ～ 5 ㎝者为大撕裂
D.
撕裂口＞ 5 ㎝者为特大撕裂
查看完整题目与答案
【单选题】The brain works much more efficiently when __.
A.
both sides of the brain are used equally
B.
the left side is fully developed
C.
scientists work on it
D.
the right side is fully developed
查看完整题目与答案
【单选题】The city is very beautiful. There are many trees on ______ sides of streets. [     ]
A.
each
B.
all
C.
both
D.
neither
查看完整题目与答案