下面计算正确的是() A: 59÷8=7……2 B: 29÷4=6……5 C: 48÷6=7……3 D: 38÷7=5……3
下面计算正确的是() A: 59÷8=7……2 B: 29÷4=6……5 C: 48÷6=7……3 D: 38÷7=5……3
○里最大能填几?○×3<10○×8<45○×5<26○×6<38○×7<50○×4<31○×9<66○×5<47
○里最大能填几?○×3<10○×8<45○×5<26○×6<38○×7<50○×4<31○×9<66○×5<47
正压式空气呼吸器报警压力为Mpa。 A: 3—5\n B: 4—6\n C: 5\n D: 6—8
正压式空气呼吸器报警压力为Mpa。 A: 3—5\n B: 4—6\n C: 5\n D: 6—8
以下是目标变量在训练集上的 8 个实际值 [0,0,0,1,1,1,1,1],目标变量的熵是所少() A: -(5/8 log(5/8) + 3/8 log(3/8)) B: 5/8 log(5/8) + 3/8 log(3/8) C: 3/8 log(5/8) + 5/8 log(3/8) D: 5/8 log(3/8) – 3/8 log(5/8)
以下是目标变量在训练集上的 8 个实际值 [0,0,0,1,1,1,1,1],目标变量的熵是所少() A: -(5/8 log(5/8) + 3/8 log(3/8)) B: 5/8 log(5/8) + 3/8 log(3/8) C: 3/8 log(5/8) + 5/8 log(3/8) D: 5/8 log(3/8) – 3/8 log(5/8)
已知int a=8,n=5,则表达式a-=2的值是________ A: 6 B: 8 C: 3 D: 5
已知int a=8,n=5,则表达式a-=2的值是________ A: 6 B: 8 C: 3 D: 5
设X~N(1, 2), Y~N(-1, 3),且X与Y相互独立,则2X-Y~( ) A: N(3, 8) B: N(3, 5) C: N(3, 11) D: N(3,25)
设X~N(1, 2), Y~N(-1, 3),且X与Y相互独立,则2X-Y~( ) A: N(3, 8) B: N(3, 5) C: N(3, 11) D: N(3,25)
已知x(n)={1, 2, 3},y(n)={1, 2, 1},则x(n)*y(n)=________。(下划线表示n=0) A: {1, 4, 8, 8, 3} B: {1, 4, 8, 8, 3} C: {1, 4, 8, 8, 3} D: {1, 4, 8, 8, 3}
已知x(n)={1, 2, 3},y(n)={1, 2, 1},则x(n)*y(n)=________。(下划线表示n=0) A: {1, 4, 8, 8, 3} B: {1, 4, 8, 8, 3} C: {1, 4, 8, 8, 3} D: {1, 4, 8, 8, 3}
畜舍防火间距一般约为畜舍檐口高度的几倍?() A: 3~5\n B: 5~7\n C: 8~10\n D: 12~15
畜舍防火间距一般约为畜舍檐口高度的几倍?() A: 3~5\n B: 5~7\n C: 8~10\n D: 12~15
竖式计算。38×28 = 482÷5=168÷8 = 53×40 =
竖式计算。38×28 = 482÷5=168÷8 = 53×40 =
下列数组声明语句中,不正确的是_________。 A: Dim a(9) As Single = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} B: Dim a() = {1, 2, 3, 4, 5, 6, 10} C: Dim a( ,) As Single = {{1, 2, 3, 4, 5}, {6, 7, 8, 9, 10}} D: Dim a() As Single = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} E: Dim n As Integer=10Dim a(n) As Single
下列数组声明语句中,不正确的是_________。 A: Dim a(9) As Single = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} B: Dim a() = {1, 2, 3, 4, 5, 6, 10} C: Dim a( ,) As Single = {{1, 2, 3, 4, 5}, {6, 7, 8, 9, 10}} D: Dim a() As Single = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} E: Dim n As Integer=10Dim a(n) As Single