皮皮学，免费搜题
登录
搜题
【单选题】
一般的讲金鱼放养密度的基础值为( )千克/m3。A.
1
B.
3
C.
5
D.
7
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
【单选题】Why does the professor mention a five story building?
A.
To correct a common misunderstanding about grasshoppers.
B.
To help explain how well' grasshoppers can jump.
C.
To compare the size of grasshopper with that of other insects.
D.
To show how quickly grasshoppers respond to danger.
【简答题】描述输出信号与输入信号的曲线称为 ;当该曲线为直线时称为 放大,其斜率称为 ;当该曲线落入1和3象限时称为 放大;当该曲线落入2和4象限时称为 放大。
【单选题】Your explanations gave us()opportunity to explain a most regrettable misunderstanding .
A.
a
B.
an
C.
the
D.
a good