皮皮学,免费搜题
登录
搜题
【简答题】
Thanksgiving Day is the fourth Thursday in November. Some Americans attend religious services ( 宗教仪式 ) on Thanksgiving morning. Others travel long distances to be with their families. They have a large dinner, and it is the main part of the celebration. Many Americans usually visit family and friends by plane, but they are driving shorter distances t his year. Some people say the attacks have frightened them. They feel safer and happier close to home. Thanksgiving is a celebration of family. Many people say that this year they are tankful for their families and friends and the good things in their lives. On Thanksgiving, people enjoy cooking, eating and talking. The traditional meal always includes a turkey with break. Other traditional Thanksgiving foods are sweet potatoes and pumpkin pie.
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
.
..
皮皮学刷刷变学霸
举一反三
【判断题】在放大电路的幅频特性曲线上,有上限截止频率 f H 和下限截止频率 f L ;当信号频率分别等于 f H 和 f L 时,若输入信号幅值相同,则两频率对应的输出信号幅值也相同。
A.
正确
B.
错误
【单选题】当信号频率等于放大电路的 f L 和 f H 时,放大倍数的数值将下降到中频时的( )。
A.
0.5 倍
B.
0.7 倍
C.
0.9 倍
D.
1.2 倍
【简答题】对于任意定义在R上的函数f(x),若存在x 0 ∈R满足f(x0)=x0,则称x0是函数f(x)的一个不动点.若函数f(x)=x2+ax+1没有不动点,则实数a的取值范围是______.
【单选题】函数f(x)是定义域为R的奇函数,且x>0时,f(x)=9 x -3x-1,则函数f(x)的零点个数是(  )
A.
1
B.
2
C.
3
D.
4
【判断题】甲公司财务人员李某在经理王某的胁迫下,帮助王某设立了账外“小金库”,由李某的行为是出于无奈和被迫,因此不违反会计职业道德。( )
A.
正确
B.
错误
【单选题】当信号频率等于放大电路的 f L 和 f H 时,电压增益下降( )。
A.
2dB
B.
3dB
C.
4dB
D.
5dB
【判断题】甲公司财务人员李某在经理王某的胁迫下,帮助王某设立了“小金库”;由于李某的行为是出于无奈和被迫,因此不违反会计职业道德。( )
A.
正确
B.
错误
【简答题】对于任意定义在R上的函数f(x ),若实数x 0 满足f(x 0 )=x 0 ,则称x 0 是函数f(x )的一个不动点,若函数f(x )=ax 2 +(2a-3)x+1恰有一个不动点,则实数a的取值集合是______.
【单选题】“现在的东西实在推板不过”,这里“推板”是什么意思?
A.
质量很差
B.
质量很好
C.
价格很贵
D.
价格很便宜
【判断题】甲公司财务人员李某在经理王某的胁迫下,帮助王某设立了账外小金库,由于李某的行为是出于无奈和被迫,因此不违反会计职业道德。 ( )
A.
正确
B.
错误
相关题目: