【单选题】听力原文:M: Hi, Jane. How is your vacation? W: Terrific! I went to Washington D. C. to visit my cousin. I saw the Jefferson Memorial, the Lincoln Memorial, the Smithsonian Institution, and the White House...
A.
It only has 6 rooms inside.
B.
It is a luxury building.
C.
It is the official home of the presidents.
D.
George Washington had lived in it.
【单选题】听力原文:F: Last month was probably my busiest ever. I traveled 30,000 kilometres and visited 35 customers. I got 15 firm orders and the nice thing is I'll get 13.5% commission on each, once the invoices ...
F.
Quality Control Manager
【判断题】2009年6月,欧盟委员会向欧盟议会、理事会、欧洲经济和社会委员会及地区委员会递交了《欧盟物联网行动计划》(Internet of Things-An action plan for Europe),意在引领世界物联网发展。( )
【单选题】—What do you think of the Eiffel Tower? —Splendid. When I was in France, I it.
【简答题】将两块大小一样含30°角的直角三角板,叠放在一起,使得它们的斜边AB重合,直角边不重合,已知AB=8,BC=AD=4,AC与BD相交于点E,连结CD。 (1)填空:如图1,AC=______,BD=______;四边形ABCD是______梯形; (2)请写出图1中所有的相似三角形(不含全等三角形); (3)如图2,若以AB所在直线为轴,过点A垂直于AB的直线为轴建立如图2的平面直角坐标系,保持Δ...
【判断题】由于旋涡泵可产生较高的压升,可用于城市污水处理系统。
【简答题】将两块大小一样含30°角的直角三角板,叠放在一起,使得它们的斜边 AB重合,直角边不重合,已知AB=8,BC=AD=4,AC与BD相交于点E,连结CD. (1)填空:如图1,AC= _____,BD=_____ ;四边形ABCD是_____ 梯形. (2)请写出图1中所有的相似三角形(不含全等三角形) (3)如图2,若以AB所在直线为x轴,过点A垂直于AB的直线为y轴建立如图2的平面直角坐标系,保...