A.scanf("c1=%cc2=%c",&c1,&c2);
B.getchar()
C.putchar(c2);
D.putchar(c1,c2)"
A.(C1<100) AND NOT (C2=0)
B.(C10)
C.NOT (C1>100) AND (C2=0)
D.NOT (C10)
A.>
B.=
若同类旋光性溶液的厚度分别为L1、L2已知,浓度C1、C2分别为已知和未知,其旋光角φ1、φ2可测出,则未知溶液浓度C2为______。
A.55
B.45
C.70
D.50
A.int y[5]={0,1,3,5,7,9};
B.double x[5]={2.0,4,0,6,0,8,0,10.0};
C.char c2[]={'\x10','\xa','\x8'};"
D.char c1[]={'1','2','3','4','5'};
A.1/3μF
B.0.28μF
C.0.24μF
D.0.14μF
k=1,2,3的三个Walsh函数作为CDMA系统的地址码,c1(t)=Wal(1,f),c2(t)=Wal(2,t),c3(t)=Wal(3,t)。分别求它们的自相关函数R11(τ),R22(τ),R33(τ)以及互相关函数R12(τ),R21(τ),R13(τ),R31(τ),R23(τ),R32(τ)(粗略画图形即可)。由所得结果讨论此码组是否能用做地址码。
A.C1>>C2、R1>>R2
B.C1>>C2、R1<<R2
C.C1<<C2、R1>>R2
D.C1<<C2、R1<<R2