【简答题】如图5.4.9所示电路中,u C (0 - )=2V,t<0时,i S =0,t>0时,i S =10A,利用三要素法求i 1 (t)、i C (t)和u C (t)。
【单选题】Do you know _____? [ ]
A.
What kind of movies dose he like
B.
What kind of movies he likes
C.
What kind of movies dose he likes.
D.
What kind of movies he like
【单选题】如图所示某电路中的部分电路,各已知的电流及元件值已标示在图中电压源US、电流I 和电阻R分别为( )A . 90V、1A、1.5Ω B. -90V、1A、1ΩC. 9V、-1A、2.5Ω D. -9V、1A、3Ω 【图片】
【单选题】设a,b,c,d,m和n均为int型变量,且a=5,b=6,c=7,d=m=2,n= 2,则逻辑表达式(m=a>b)&&(n=c>d)运算后,n的值为 ( )
【单选题】—______ do you like? —Thrillers. [ ]
【简答题】[计算题] 3.9-1 应用网孔电流法求图 3.5.9 所示电路中的 u 和受控源吸收的功率。 取如图所示的网孔电流,则 i m1 =______A , i m2 =_______A , i m3 =_______A , U =_______V , P VCVS =_______W 。 图 3.5.9 题3.9电路图
【简答题】A.What salary the borrower makes. B.What kind of job the borrower has. C.What kind of house the borrower lives in. D.How much money the borrower owns.
【单选题】He didn’t know __________
A.
what kind of snake it is
B.
what kind of snake is it
C.
what kind of snake it was
D.
what kind of snake was it
【单选题】在题 9 图所示放大电路中 , 已知 I 1 ≫ I BQ ,U BQ ≫ U BEQ , 则当温度升高时