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【简答题】
为什么要提高原油采收率?提高原油采收率主要有那些方法?
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【单选题】在磷掺杂浓度为2×1016cm-3的硅衬底(功函数约为4.25eV)上要做出欧姆接触,下面四种金属最适合的是( )。
A.
In (Wm=3.8eV)
B.
Cr (Wm=4.6eV)
C.
Au (Wm=4.8eV)
D.
Al (Wm=4.2eV)
查看完整题目与答案
【单选题】--___________? –I went to the mountains.
A.
Where did you go on vacation?
B.
What are you doing for vacation?
C.
How did you go to the mountains?
D.
How often do you go to the mountains?
查看完整题目与答案
【单选题】在磷掺杂浓度为2×1016cm-3的硅衬底（功函数约为4.25eV）上要做出欧姆接触，下面四种金属最适合的是（A在磷掺杂浓度为2×1016cm-3的硅衬底（功函数约为4.25eV）上要做出欧姆接触，下面四种金属最适合的是（A在磷掺杂浓度为2e16 cm-3的硅衬底（功函数约为4.25eV）上要做出欧姆接触，下面四种金属最适合的是（）
A.
In (Wm=3.8eV)
B.
Cr (Wm=4.6eV)
C.
Au (Wm=4.8eV)
D.
Al (Wm=4.3eV)
查看完整题目与答案
【单选题】Did the boy have fun __________ to the mountains? [     ]
A.
go
B.
went C.  to go D.  going
查看完整题目与答案
【单选题】吊篮上每根安全钢丝绳上必须装有（）安全锁。
A.
不能自动复位
B.
能够自动复位
C.
切断电源
D.
自动
查看完整题目与答案
【判断题】电动吊篮必须装有安全锁,安全锁应能自动复位。
A.
正确
B.
错误
查看完整题目与答案
【判断题】[判断题]电动吊篮必须装有安全锁,安全锁应能自动复位。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Did Daming and his father take photos of the mountains? ______________
A.
Yes, he did
B.
No, he didn’t
C.
No, they did
D.
Yes, they did
查看完整题目与答案
【单选题】According to the professor, where did tulips originate?
A.
In the mountains of central Asia
B.
In the region around Istanbul in Turkey
C.
In the sandy soils of the Netherlands
D.
In the forests of northern Europe
查看完整题目与答案
【单选题】—Did you go to the beach with your parents last weekend? —No, we ________ went to the mountains instead.
A.
both
B.
all
C.
either
D.
neither
查看完整题目与答案
相关题目：
【单选题】在磷掺杂浓度为2×1016cm-3的硅衬底(功函数约为4.25eV)上要做出欧姆接触,下面四种金属最适合的是( )。
A.
In (Wm=3.8eV)
B.
Cr (Wm=4.6eV)
C.
Au (Wm=4.8eV)
D.
Al (Wm=4.2eV)
查看完整题目与答案
【单选题】--___________? –I went to the mountains.
A.
Where did you go on vacation?
B.
What are you doing for vacation?
C.
How did you go to the mountains?
D.
How often do you go to the mountains?
查看完整题目与答案
【单选题】在磷掺杂浓度为2×1016cm-3的硅衬底（功函数约为4.25eV）上要做出欧姆接触，下面四种金属最适合的是（A在磷掺杂浓度为2×1016cm-3的硅衬底（功函数约为4.25eV）上要做出欧姆接触，下面四种金属最适合的是（A在磷掺杂浓度为2e16 cm-3的硅衬底（功函数约为4.25eV）上要做出欧姆接触，下面四种金属最适合的是（）
A.
In (Wm=3.8eV)
B.
Cr (Wm=4.6eV)
C.
Au (Wm=4.8eV)
D.
Al (Wm=4.3eV)
查看完整题目与答案
【单选题】Did the boy have fun __________ to the mountains? [     ]
A.
go
B.
went C.  to go D.  going
查看完整题目与答案
【单选题】吊篮上每根安全钢丝绳上必须装有（）安全锁。
A.
不能自动复位
B.
能够自动复位
C.
切断电源
D.
自动
查看完整题目与答案
【判断题】电动吊篮必须装有安全锁,安全锁应能自动复位。
A.
正确
B.
错误
查看完整题目与答案
【判断题】[判断题]电动吊篮必须装有安全锁,安全锁应能自动复位。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Did Daming and his father take photos of the mountains? ______________
A.
Yes, he did
B.
No, he didn’t
C.
No, they did
D.
Yes, they did
查看完整题目与答案
【单选题】According to the professor, where did tulips originate?
A.
In the mountains of central Asia
B.
In the region around Istanbul in Turkey
C.
In the sandy soils of the Netherlands
D.
In the forests of northern Europe
查看完整题目与答案
【单选题】—Did you go to the beach with your parents last weekend? —No, we ________ went to the mountains instead.
A.
both
B.
all
C.
either
D.
neither
查看完整题目与答案