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【单选题】
The manager has _____ to improve the working conditions in the company. [ ]A.
accepted
B.
allowed
C.
permitted
D.
agreed
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【简答题】An artist went to the countryside for a holiday, and stayed 1 a farmer. Every day he went out and painted 2 morning to evening, and then when it 3 dark, he went back to the farm and had a good dinner ...
【单选题】It’s said that this is the first time the painting_____ to the public, which attracts many people.
A.
were displayed
B.
are displayed
C.
has displayed
D.
has been displayed
【简答题】误差分成三类：随机误差、（ ）和粗大误差。
【简答题】如图,点B在圆锥母线VA上,且VB= VA.过点B作平行与底面的平面截得一个小圆锥的侧面积为S 1 ,原圆锥的侧面积为S,则下列判断中正确的是( ) (A) (B) (C) (D)
【简答题】Grandma Moses is among the most famous twentieth- century painters of the UnitedStates. yet she did not start painting until she was in her late sies. As she once said toherself"l would never sit...
【简答题】如图所示是一个圆锥在某平面上的正投影，则该圆锥的侧面积是______．
【简答题】如图，圆锥的母线长为 4，底面半径为 ，若在圆锥的侧面绕一圈丝线作装饰：从底面上的点A出发，沿圆锥侧面绕一周回到点A，则这条丝线的最短长度是多少？
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