在题图所示的共基放大电路中,电容 C 对信号可视为短路。晶体管的 β = 50 , r bb ¢ = 50 W , R B1 = 30k W , R B2 =15k W , U CC =12V , R C =3k W , R E =2k W , R L =3k W 。 该电路的静态工作点为( )。 增益 Au 为( )。 输出电阻 R o 为 ( ) 。
【单选题】Sometimes marketing managers use a positioning statement to provide focus for a marketing mix. Which of the following is not included in a positioning statement?
A.
A list of competitors' strengths
B.
The firm's desired target market
C.
The main reasons a buyer should believe the firm's claims
D.
The product's primary benefit or point of differentiation