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【单选题】
材料的弹性模量E是衡量材料在弹性范围内抵抗()能力的指标。
A.
破坏
B.
变形
C.
弯曲
D.
疲劳
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【简答题】Even many early leaders of the United States have provided names for towns, only George Washington is remembered in the name of a state.
【简答题】一辆卡车从甲城到乙城要行驶4小时,一辆轿车的速度是卡车的2倍,那么,轿车从甲城到乙城需要几小时?
【单选题】要约人发出要约后,要使要约不发生效力,就应及时撤回要约或撤消要约。撤回要约的通知( )。
A.
随后发出即可
B.
必须在受要约人收到要约前发出
C.
应在受要约人承诺前送达
D.
应先于要约或与要约同时送达受要约人处
【简答题】一辆卡车和一辆客车分别从甲、乙两城同时出发,相向而行,卡车到达乙城后立即返回,客车到达甲城后也立即返回。已知卡车和客车的速度比为4:3,两车第一次相遇地点距第二次相遇地点24千米,求甲、乙两城相距多少千米?
【判断题】we learned more outside the classroom than we learned inside it.
A.
正确
B.
错误
【单选题】We learned from the first two paragraphs that
A.
the cows were more sensitive to the flash flood.
B.
Helen was more sensitive to the flash flood.
C.
Helen was scared when they met.
D.
the cows were scared when seeing us.
【简答题】根据自由度的不同,周转轮系可分为 轮系 和 轮系 。(均为2个字)
【单选题】From this article we have learned that the Arabs__________
A.
made more discoveries than the Romans.
B.
helped to preserve the Roman medical works.
C.
discovered more about the way the human body works.
D.
Occupied big parts of the old Roman lands 2,000 years ago.
【单选题】根据周转轮系所具有的自由度不同,周转轮系可进一步分为自由度为 1 的()和自由度为 2 的( )。
A.
行星轮系;差动轮系
B.
差动轮系;行星轮系
【简答题】一辆卡车和一辆轿车从甲城开往乙城,当轿车行全程的 1 2 时,卡车行44公里.照这样计算,当轿车到达终点时,卡车行全程的 4 5 ,则甲乙两城相距多少公里?
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