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【简答题】
Many suburban families have sliding glass doors on their patios, with steel bars elegantly built in so no one can pry the doors open.
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举一反三
【简答题】Determine DOF of the four-bar mechanism
【简答题】听音，选词填空。 older higher good bigger better 1. This girl is ______. 2. I'm ______ than Lingling. 3. Beijing is ______ than Tianjin. 4. Mount Qomolangma is ______ than Mount Tai. 5. I think this boy...
【单选题】The new building _____ at the end of this year _____ to that university.
A.
be completed; belongs
B.
being completed; is belonging
C.
to be completed; belongs
D.
completed; is belonged
【判断题】技术发明是指在科学发现的基础上，把已有的对于自然界的认识成果，即科学理论、科学原理和科学知识，运用创造性思维的方法，构思出一种新的技术原理，或创造出一种技术原理的新的运用方式，或创造出一种以原理模型、生产样品等为主的技术物品。()
A.
正确
B.
错误
【单选题】Which one of the four is NOT correct?
A.
English-speaking countries are UK, USA, Canada, Barbados, etc.
B.
English-speaking countries are UK, Canada, Australia, New Zealand, etc.
C.
English-speaking countries are USA, Canada, Australia, the Republic of Ireland, etc.
D.
English-speaking countries USA, Canada, Australia, Egypt, etc.
【单选题】When the four-bar mechanism is at the dead point, its transmission angle γ is ( ).
A.
0°
B.
90°
C.
45°
D.
-45°
【简答题】four-bar linkage
【简答题】Sketch
a four-bar linkage using schematic symbols
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