题目内容
（请给出正确答案）
After the guests left, she spent half an hour _______ the sittingroom.
A) ordering B) arranging C) tidying up D) clearing away
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更多“After the guests left, she spe…”相关的问题
Linda: Yes, Mr. Taylor. We will use the conference room （答案？）for the meeting.
John: Thats right. The meeting is very important. Where shall the guests gather before the meeting begins？
Linda: （答案？） . Its spacious there.
John: We will have several foreign guests （答案？）.
Linda: I have arranged for an interpreter to be present. But it is said these foreigners can speak English.
John: Really？ I will also try to speak slowly. How will you arrange （答案？） , Linda？
Linda: We have prepared the name cards to be put （答案？） for guests to sit by. What time would you like refreshments, Mr. Taylor？
John: Well, after my report, there will be a break for refreshments.
Linda: All right, I see.
A. from Spainon
B. on the second floor
C.on the conference table
D.In the VIP lounge
E.the guests seats
题图中，已知机构各部分尺寸：lAC=lBC=lCD=lCE=lDF=lEF=lFG=lFH=lGI=lHI=10mm，设两滑块以等速v1=v2=0.002m/s，沿相反方向滑动，求图示位置(φ3=45°)时速度比值vI/v1。
如题图所示，搬运器机构各构件尺寸为：lAB=lED=200mm、lBC=lCD=lEF=400mm，在图示位置时φ1=φ23=φ3=90°。设滑块5上作用一常力F5=2000N。现以构件1为等效构件，求由F5所形成的等效力矩Mv，并作出Mv-φ1曲线，φ1是构件1的位置角。
