题目内容

射极输出器的特点之一是（）。

A. 输入电阻大，输出电阻大
B. 输入电阻小，输出电阻大
C. 输入电阻大，输出电阻小
D. 输入电阻小，输出电阻小

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分类数据的图示方法主要有、、、等.

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.