皮皮学，免费搜题
登录
搜题
【判断题】
精益生产方式只适合生产制造部门或领域。A.
正确
B.
错误
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 author mention the 'mother' and 'father' in the first paragraph?
A.
To present the background of statistics in a humorous and understandable way
B.
To point out that parents can teach their children statistics
C.
To explain that there are different kinds of variables
D.
To introduce inferential statistics
【单选题】Why does the author mention the 'mother' and 'father' in the first paragraph?
A.
To present the background of statistics in a humorous and understandable way
B.
To point out that parents can teach their children statistics
C.
To explain that there are different kinds of variables
D.
To introduce inferentical statistics
【简答题】谐振时, ,相移 =( ); 时,电路呈( )性,相移为( )值; 时,电路呈( )性,相移为( )值。
【单选题】Why does Crusoe’s first attempt at making a canoe fail?
A.
The wood is rotten
B.
The canoe is too fragile
C.
The canoe is too heavy
D.
Termites eat through the bottom
【单选题】RLC电路中,当外加频率高于电路谐振频率时,若电路阻抗呈容性,相当于一个电容,此电路为____谐振电路。当外加频率低于电路谐振频率时,若电路呈感性,相当于一个电感线圈,此电路为____谐振电路。所以当串联或并联谐振电路不是调节在信号频率点时,信号通过后将会产生相移(即相位失真).
A.
串联,串联
B.
并联,并联
C.
并联,串联
【单选题】Why does the author mention the Massachusells taay Colony?
A.
The first lantern wicks wete develop(!d ttleYe．
B.
It was the headquarters of the Unitedl Stales IAghthouse Board．
C.
Many of the tallest lighthouses were build there．
D.
The first lighthouse in North Ameriea was buill there．
【单选题】Why does Harker come to Dracula’s castle at the first place?
A.
He is a vampire hunter and wants to eradicate them for good.
B.
He is a young, English lawyer who must visit Count Dracula in order to finalize a transfer of real estate in England.
C.
He is lost in a trip to Transylvania.
D.
His business requires him to travel through the Carpathian Mountains.
【单选题】并联谐振回路的阻抗和相位是随频率变化的，以下哪个正确？（）
A.
谐振时，即f=f 0 ，或Δf=0，回路阻抗最小，且为纯电阻，相移φ=0；
B.
当f>f 0 时，Δf=（f-f 0 ）>0，相移φ为负值，回路呈现电容性。
C.
当f 0时，Δf<0，相移φ也为负值，回路呈现电感性。< /div>
相关题目：