文档介绍：代数表达式
(28)代数表达式,对应Visual Basic表达式是[28] 。
A)Sqr((x+Log(x))/(a+b))+Exp(-t)+Sin((x+y)/2)
B)Sqr(x+Log(x)/(a+b))+Exp(-t)+Sin((x+y)/2)
C)Sqr((x+Ln(x))/(a+b))+Exp(-t)+Sin((x+y)/2)
D)Sqr((x+log(x))/(s+b))+Exp(-t)+Sin(x+y/2)
答案:A
28. 代数表达式,对应Visual Basic 表达式是___28___。
A. E^(x+y)+|x+y|^1/2/2π+1
B. Exp(x+y)+Sqr(Abs(x+y))/2*+1
C. (Exp(x+y)+Sqr(Abs(x+y)))/(2*+1)
D.( Exp(x+y)+Sqr(Abs(x+y)))/2*π+1
答案:C
25. 数学表达式对应的Visual Basic 算术表达式是__25___。
A. Ln(E^(xy)+Abs(Tan(z))+Cosx^3)
B. Log(Exp^(xy)+Abs(Tan(z))+Cosx^3)
C. Ln(Exp^(x*y)+Abs(Atn(z))+Cosx^3)
D. Log(Exp(x*y)+Abs(Atn(z))+Cos(x)^3)
答案:D
27. 代数表达式对应的Visual Basic表达式式___27___。
A. Log(Abs((Exp()+Sin(x)^3)/(x+y)))
B. Ln(Abs((Exp()+Sin(x)^3)/(x+y)))
C. Log(Abs(Exp()+Sin(x)^3)/(x+y))
D. Log│Abs(Exp()+Sin(x)^3)/(x+y)│
答案:A
28. 代数表达式,对应Visual Basic 表达式是___28___。
A. Sqr((x+Log(x))/(a+b))+Exp(-2*t)+Sin((x+y)/2)
B. Sqr(x+Log(x)/(a+b))+Exp(-2*t)+Sin((x+y)/2)
C. Sqr((x+Ln(x))/(a+b))+Exp(-2*t)+Sin((x+y)/2)
D. Sqr((x+Log(x))/(a+b))+Exp(-2*t)+Sin(x+y/2)
答案:A
Basic表达式是__23___。
A. Sqr((x+log(x))/(a+b))+exp(-2*t)+cos((x+y)/2)
B. Sqr(x+log(x))/(a+b)+exp(-2*t)+cos((x+y)/2)
C. Sqr((x+ln(x))/(a+b))+exp(-2t)+cos((x+y)/2)
D. Sqr((x+log(x))/(a+b))+exp(-2*t)+cos(x+y/2)
答案:A
逻辑表达式
(27)设Mys1,Mys2均为字符串型变量,Mys1 = “Visual Basic”,Mys2 = “b”,则下面关系表达式中结果为True的是 27 。
A)Mid(Mys1,8,1)>Mys2
B)Len(Mys1)<>2*Instr(Mys1,”l,”)
C)Chr(66) & Right(Mys1,4) = ”Basic”
D)InStr(Left(Mys1, 6), 1) + 60 > Asc(UCase(Mys2))
(25)下面表达式的值为真的是 25 。
A)Mid("Visual Basic”,1,12) = Right("Programming Language Visual Basic”,12)
B)”ABCRG" > “abcde”
C)Int()> = Cint()
D)< = And ->-
(26)下列表达式中,值为True的是 26 。
A)UCase(“ABCD")> = “abcd” B)14/2\3<10 MOD 4
C)Mid(“ABCD",2,2)>Left(“ABCD”,2) D)not(Sqr(4)-3> = -2)
(26)x+y小于10且x-y大于0的逻辑表达式是 26 。
A)x+y<10 Or x-y>0 B) (x+y<10) = (x-y)>0
C)x+y<10 And x-y>0 D) x+y<10 .And. x-y>0
23. 对于“X>Y>Z”,正确的VB逻辑表达式是___23___。