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分类数据的图示方法主要有、、、等.

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饼图是用圆形及圆内扇形的角度来表示数值大小的图形，它主要用于表示一个样本（或总体）中，对于研究问题十分有用.

1.铰链四杆机构中，取最短杆对边为机架时得到双摇杆机构。( )

A. 对
B. 错

Translating into ChineseBuilt 4，000 years ago,the three great pyramids at Giza,in the Egyptian desert remain the most colossal buildings ever constructed.In Europe,the honeymoon is of great significance to wedding couples,and many newlyweds travel for their honeymoon.Modern British honeymoon usually choose to head to beach destinations for their honeyoons,with the Maldives and the Caribbean the most popular honeymoon choice.I'd like to book a double room for Tuesday next week.Would you kindly sign the exchange form, giving your name and address?I'd like to know if you could change this money back into U.S dollars for me.

Translating into English诞生159年来，世博会把不同国度，不同民族，不同文化背景的人们汇聚在一起，沟通心灵，增进友谊，加强合作，共谋发展。世博会给国际社会留下了追求进步，崇尚创新，开放共荣，倡导和谐的宝贵精神财富，为文明的对话提供了平台，见证了中国人民同世界各国人民的友谊。九寨沟享誉世界，在旅游届处于十分重要的地位。近年来，张家界森林公园开始吸引了大批外国旅游者。从泰山顶上看去，日出真是个奇观。在中国的手绣中，苏绣被认为是最好的一种。