听力原文:M: Would you like to go to a party tonight? W: That sounds like a good idea. M: Would 7:00 be OK? W: That's fine. I'm looking forward to it. What will the speakers do over tonight?
A.
Go to a party.
B.
Stay at home.
C.
Climb mountains.
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参考答案:
举一反三
【单选题】图示结构,已知其结构的结点位移向量{△}=[3.7 2.7 5.1] T ×10 -6 ,单元②在局部坐标中的杆端位移向量 为:( )