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【简答题】
4(2018四川广安)如图,AB是能绕B点转动的轻质杠杆,在中点C处用绳子悬挂重为100N的物体(不)在A端施加竖直向上的拉力使杠杆在水平位置平衡,则拉力F= N.若保持拉力方向始终垂直于杠杆,将A端缓慢向上提升一距离,在提升的过程中,拉力F将 (选填 “增大”、“减小”或“不变”)
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【简答题】()是决定当代中国命运的关键一招
【简答题】采购的基本流程是什么?
【单选题】Choose the deductive reasoningfrom the following statements.
A.
All of our snowstorms come from the north. It's starting to snow. Therefore, the storm is coming from the north.
B.
The first lipstick I pulled from my bag is red. The second lipstick I pulled from my bag is red. Therefore, all the lipsticks in my bag are red.
C.
My mother is Irish. She has blond hair. Therefore, everyone from Ireland has blond hair.
D.
Maximilian is a shelter dog. He is happy. All shelter dogs are happy.
【单选题】采购的基本流程是
A.
收到正式请求 →选择供应商→确定供应商和谈判→监督订单→接收与验收
B.
收到正式请求 →确定供应商和谈判→选择供应商→监督订单→接收与验收
C.
收到正式请求 →确定供应商和谈判→监督订单→选择供应商→接收与验收
D.
收到正式请求 →选择供应商→监督订单→确定供应商和谈判→接收与验收
【简答题】采购的基本流程是什么？
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