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【单选题】
图示结构在斜杆CD的中点作用一铅垂向下的力P，杆 AB水平，各杆的自重不计，铰支座A的反力FA的作用线应该是：A.
FA沿水平线
B.
FA沿铅垂线
C.
FA沿A、D连线
D.
无法判断
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举一反三
【单选题】Downward shifts are
A.
increases in both demand and supply.
B.
decreases in both demand and supply.
C.
increases in demand and decreases in supply.
D.
increases in supply and decreases in demand.
【多选题】不同的网络设备和网络互联设备实现的功能各不相同，主要取决于设备工作在OSI模型的第几层。下列哪些设备工作在数据链路层?( )
A.
网桥
B.
传统交换机
C.
路由器
D.
网卡
E.
集线器
【简答题】向下的 downward
【简答题】Logic yzers are designed to capture data from multi-pin devices and buses. The term “capture rate” refers to how often the inputs are sampled. It is the same function as the time base in an oscill...
【简答题】Electricity is used for many parts of the car, from the headlights to the radio, but the main function of it is to provide the electrical spark needed to ignite the fuel in the cylinders. The electric...
【简答题】Downward Communication
【简答题】A ship cannot function without the various pumping systems placed in or controlled from the machinery spaces. The pumping systems are of major importance and they are many and varied. Some systems sup...
【单选题】患者,男性,37岁,患胃溃疡9年余。行毕‖式胃大部切除术后第5d,突发右上腹剧痛,腹部有明显压痛、反跳痛和腹肌紧张。首先考虑并发了
A.
吻合口出血
B.
急性输人襻梗阻
C.
倾倒综合征
D.
吻合口梗阻
E.
十二指肠残端破裂
【单选题】In a downward information flow, information:
A.
originates at the lowest level of the organization and is passed downward through the various levels.
B.
originates at a higher level and is passed to lower levels.
C.
flows between functional business units and work teams.
D.
is communicated from and to customers, suppliers, distributors, and other partners for the purpose of doing business.
【单选题】丁某，女，32岁，今晨在腰麻下行子宫肌瘤切除术，术前护士为其插导尿管，请问插导尿管的目的是
A.
避免术中出现尿潴留
B.
避免术中出现尿失禁
C.
避免术中误伤膀胱
D.
便于切除肿瘤
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