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【单选题】
汽油机燃料供给系根据发动机不同( )的要求,配置可燃混合气。A.
油耗
B.
转速
C.
工况
D.
温度
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【单选题】How can people reduce the level of danger when doing extreme sports?
A.
Reduce the times of doing extreme sports.
B.
Wear safety equipment.
C.
Do extreme sports with other people.
【单选题】Some extreme sports ______.
A.
cost a lot of money,
B.
belong in the category of popular sports.
C.
waste your time.
D.
are forbidden.
【简答题】系统设计的五个指标是可靠性、工作质量、________、工作效率和经济性。
【单选题】Some extreme sports_____.
A.
cost a lot of money
B.
belong to the category of popular sports
【多选题】Extreme sports are also called ( ).
A.
action sports
B.
active sports
C.
adventure sports
D.
air sports
【简答题】Some extreme sports __________. (10.0分)A. cost
a lot of money B. belong to the category of popular sports
【简答题】Sure，you’ve watched extreme pet sports on Animal Planet. But did you know that there’s a whole world of athletic activities for dogs right in our area? There are some reasons for considering taking pa...
【简答题】Nowadays more and more young athletes are taking part in the risky activities called “extreme sports” or “X-sports”. In the past young athletes would play baseball. Today, they want risk and excitemen...
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