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【简答题】
铰链四杆机构和含有一个移动副的平面四杆机构有哪些基本类型？（各列举3种以上即可）
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反馈参考答案：
举一反三
【简答题】10 设有两种报警系统Ⅰ与Ⅱ，它们单独使用时有效的概率分别为 0.92 与 0.93 ，且已知在系统Ⅰ失效的条件下，系统Ⅱ有效的概率为 0.85 ，求：系统Ⅰ与Ⅱ同时有效的概率？
【简答题】第9次课作业任务及要求.docx
【单选题】People from all over the world ________ China on the successful launch of Chang’E-1.
A.
celebrated
B.
greeted
C.
congratulated
D.
enjoyed
【单选题】The successful launch of Chang'e II _____ everyone involved in the space project making an effort. [ ]
A.
carried out
B.
found out
C.
relied on
D.
agreed on
【单选题】听力原文： Hosting a successful party can give you a glow that will linger for days. It is easy to be a successful host: a few simple precautions, a little imagination, and careful attention to details are...
A.
A sparkling party.
B.
Host mastery.
C.
A successful host.
D.
Rules to remember.
【简答题】听力原文：What will the successful applicant be paid? What will the successful applicant be paid? Top London rates and provided with______.
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