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【简答题】
Study abroad is not only an important part of a well-rounded educational experience, it’s also becoming increasingly significant for success in the modern global economy. The following quotes might inspire you on the value of studying abroad. “While there are many reasons to participate in a study abroad program, I believe the most important is the opportunity to see the world (1)____________. These are powerful, transformative experiences that will (2)____________ in business and in life.” -- G.P. “Bud” Peterson, President of Georgia Tech “Like higher education, study abroad is (3) ____________ in your future. As with any other type of investment, it requires planning, careful management, (4)____________. The personal, academic and professional rewards, however, (5)____________.” -- James Collins, President of Loras “Educational and cultural exchanges provide a perfect opportunity for a precious spark to grow in us, elevating our ideas, deepening our tolerance, sharpening our appetite for knowledge, and making us (6)____________ through our careers.” -- Ronald Reagan, former US President
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【简答题】如图,在边长为a的菱形ABCD中,∠ABC=60°,PC⊥面ABCD,E,F是PA和AB的中点。 (1)求证: EF∥平面PBC; (2)求E到平面PBC的距离。
【单选题】王さん、陳さんの電話番号を__か
A.
知ります
B.
知っています
C.
知りました
D.
知った
【简答题】如图,已知四棱锥P-ABCD,底面ABCD为菱形,PA⊥平面ABCD,∠ABC=60°,点E,G分别是CD,PC的中点,点F在PD上,且PF:FD=2:1。 (1)证明:FA⊥PB; (2)证明:BG∥面AFC。
【简答题】如图,已知四棱锥P-ABCD底面ABCD为菱形,PA⊥平面ABCD,∠ABC=60°,E、F分别是BC、PC的中点. (1)证明:AE⊥PD; (2)设AB=2,若H为线段PD上的动点,EH与平面PAD所成的最大角的正切值为 6 2 ,求此时异面直线AE和CH所成的角.
【简答题】已知四位数 . abcd 满足 . abcd + . abc + . ab +a= ,则 . abcd 为______.
【简答题】如图,已知四棱锥P-ABCD,底面ABCD为菱形,PA⊥平面ABCD,∠ABC=60°,E,F分别是BC,PC的中点。 (1)证明:AE⊥PD; (2)若H为PD上的动点,EH与平面PAD所成最大角的正切值为 ,求二面角E-AF-C的余弦值。
【单选题】DNS 工作于( )
A.
网络层
B.
传输层
C.
会话层
D.
表示层
E.
应用层
【单选题】DNS工作于
A.
网络层
B.
会话层
C.
应用层
D.
数据链路层
E.
表示层
【单选题】Deviation changes with a change in ( ).
A.
sea conditions
B.
heading
C.
longitude
D.
latitude
【单选题】Deviation changes with a change in .
A.
heading
B.
longitude
C.
latitude
D.
sea conditions
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