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称取大理石(CaCO3)试样0.2500g,用HCL溶解,加入PH=10的缓冲溶液和少许K--B指示剂,用CEDAT=0.1000mol/L的EDTA溶液滴定至终点时,消耗25.00ml,计算试样中CaO的质量分数是多少?
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下列过程定义语句中,形参个数为不确定数量的过程是( )。A.Private Sub Pro3(x As Double,y As Single)B.Private Sub Pro3(Arr(3),Option x,Option y)C.Private Sub Pro3(ByRef x,ByVal y,Arr( ))D.Private Sub Pro3(ParamArray Arr( ))
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在通用声明中定义a,在窗体中添加一个命令按钮Command1,编写如下程序代码:DimaAsIntegerSubtest()a=a+1:b=b+1:c=c+1PrintSub:;a;,;b;,;cEndSubPrivateSubCommand1_Click()a=2:b=3:c=4CalltestCalltestEndSub程序运行后,单击命令按钮,窗体中将显示( )A.Sub:3,4,5Sub:4,5,6B.Sub:2,3,4Sub:2,3,4C.Sub:3,1,1Sub:4,1,1D.Sub:1,1,1Sub:1,1,1
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运行以下程序后,输出结果为_____________。 Private Sub Command1_Click() a=1:b=2:c=3 Call test(a,b+3,(c)) Print "main:";a;b;c End Sub Private Function test(p,m,n) p=p+1:m=m+1:n=n+1 Print "sub:";p;m;n End Function:A. sub:2 6 4 main:1 2 3B. sub:2 6 4 main:2 2 3C. sub:2 6 4 main:2 6 4D. sub:2 6 4 main:1 6 4
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强酸中毒血气分析正确为( )
A.pH上升B.PaCO/sub2/supsubno上升C.PaO/sub2/supsubno上升D.HCO/sub3/supsubno/sup-/supsubno降低E.HCO/sub3/supsubno/sup-/supsubno升高
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用分析天平称取某药物片剂的质量为0.2500g,其实际质量应是A.0.2500gB.(0.2500—1)gSX
用分析天平称取某药物片剂的质量为0.2500g,其实际质量应是A.0.2500gB.(0.2500—1)gC.(0.2500+1)gD.(0.2500±0.0001)gE.0.2499g
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强酸中毒血气分析正确为()。
A.pH上升B.PaCO/sub2/supsubno上升C.Pa0/sub2/supsubno上升D.HCO/sub3/supsubno/sup-/supsubno降低E.HCO/sub3/supsubno/sup-/supsubno升高
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下列程序的运行结果是______。Sub abcd(ByValn As Integer)n=n+5End SubPrivate Sub Form_Click()nx%=3Callabcd(nx%)Printnx%End Sub
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下列程序的输出结果是______。 #include sub1(char a,char b) {char c; c=a;a=b;b=c;} sub2(char* a,char b) {char c; c=*a;*a=b;b=c;} sub3(char* a,char*b) {char c; c=*a;*a=*b;*b=c;} { char a,b; a='A' ;b='B'; sub3 (a, b) ;putchar (a) ;putchar (b); a='A';b='B';sub2(a,b);putchar(a);prtchar(b); a='A';b='B';sub1(a,b);putchar(a) ;putchar(b); }A.BABBABB.ABBBBAC.BABABAD.BAABBA
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在窗体中添加一个命令按钮,编写如下程序: Private Sub Subl(p,m,n) p=p+1:m=m+1:n=n+1 Print"subl:";p;m;n End Sub Private Sub Command1_Click() al=1:b=2:c1=3 Call Subl(a,b1+3,c1) Print"Main:";a1;b1;c1 End Sub 程序运行后,输出结果为A.Sub:2 6 4 Main:2 6 4B.Sub:2 6 4 Main:2 6 4C.Sub:2 6 4 Main:1 2 3D.Sub:2 6 4 Main:2 2 3
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写出程序运行的结果Public class BasePublic virtual string Hello() {return “Base”;}Public class Sub:BasePublic override string Hello() {return “Sub”;}1. Base b = new Base(); b.Hello;2. Sub s = new Sub(); s.Hello;3. Base b = new Sub (); b.Hello;4. Sub s = new Base(); s.Hello;
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在窗体中添加一个命令按钮,编写如下程序: Private Sub Test(p,m,n) p=p+1:m=m+1:n=n+1 Print "Sub: ";p;m;n End Sub Private Sub Command1.Click() a1=1:b=2:c1=3 Call Test((a,b1+3,(c1)) Print "Main:";a1;b1;c1 End Sub 程序运行后,输出结果为A.Sub: 2 6 4 Main: 2 6 4B.Sub: 2 6 4 Main: 2 6 4C.Sub: 2 6 4 Main: 1 2 3D.Sub: 2 6 4 Main: 2 2 3
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在窗体中添加一个命令按钮,编写如下程序:Private Sub Sub1(p,m,n)p=p+1:m=m+1:n=n+1Print "sub1:";p;m;nEnd SubPrivate Sub Command1_Click()a1=1:b=2:c1=3Call Sub1(a,b1+3,c1)Print"Main:";a1;b1;c1End Sub程序运行后,输出结果为A.Sub: 2 6 4 Main: 2 6 4B.Sub: 2 6 4 Main: 2 6 4C.Sub: 2 6 4 Main: 1 2 3D.Sub: 2 6 4 Main: 2 2 3
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在窗体中添加一个命令按钮,编写如下程序: Private Sub Sub1(p,m,n) p=p+1:m=m+1:n=n+1 Print "sub1:";p;m;n End Sub Private Sub Command1_Click() a1=1:b=2:c1=3 Call Sub1(a,b1+3,c1) Print"Main:";a1;b1;c1 End Sub 程序运行后,输出结果为A.Sub: 2 6 4 Main: 2 6 4B.Sub: 2 6 4 Main: 2 6 4C.Sub: 2 6 4 Main: 1 2 3D.Sub: 2 6 4 Main: 2 2 3
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称取CaCO3和MgCO3的混合物0.7093克,灼烧至恒重后得CaO和MgO混合物0.3708克,则测量试样中的CaCO3的百分含量为()。A、32.32%B、54.48%C、38.61%D、45.57%
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设当前目录是根目录,使用第()组命令不能在一级子目录SUB1下建立二级子目录SUB11。A、CD SUB1(回车)MD SUB11B、MD SUB1/SUB11C、MD SUB11D、MD/SUB1/SUB11
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单选题永续盘存法公式为()A
Ksubt/sub+1=Isubt/sub-(1-δ)Ksubt/subB
Ksubt/sub+1=It+(1-δ)Ksubt/subC
Ksubt/sub+1=Isubt/sub+(1+δ)Ksubt/subD
Ksubt/sub+1=Isubt/sub-(1+δ)Ksubt/sub
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单选题煤矿井下的有害气体主要是由()、CO2、H2S、NO2、H2、NH3气体组成。A
COB
pCHsub4/sub、SOsub2/sub/pC
pSOsub2/sub、CO/pD
pCO、CHsub4/sub、SOsub2/sub/p
考题
单选题酶促反应速度(v)达到最大反应速度(Vmax)的80%时,底物浓度[S]为A
p1Ksubm/sub/pB
p2Ksubm/sub/pC
p3Ksubm/sub/pD
p4Ksubm/sub/pE
p5Ksubm/sub/p
考题
单选题A
pIsub2/sub=Isub3/sub/pB
pIsub2/sub=4Isub3/sub/pC
pIsub2/sub=2Isub3/sub/pD
pIsub3/sub=4Isub2/sub/p
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多选题标准砝码的质量为m,测量得到的最佳估计值为100.02147g,合成标准不确定uc(ms) 为0.35mg,取包含因子k=2,以下表示的测量结果中 ( ) 是正确的。Apmsubs/sub=100.02147g;U=0.70mg,k=2/pBpmsubs/sub=(100.02147±0.00070)g;k=2/pCpmsubs/sub=100.02147g;usubc/sub(msubs/sub)=0.35mg,k=1/pDpmsubs/sub=100.02147g;usubc/sub(msubs/sub)=0.35mg/p
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单选题正态分布时,算术平均数、中位数、众数的关系为()A
msub0/sub<msube/sub<(xB
msub0/sub=msube/sub=(xC
msub0/sub>msube/sub>(xD
msube/sub<msub0/sub<(x
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多选题1. class Super { 2. private int a; 3. protected Super(int a) { this.a = a; } 4. } ..... 11. class Sub extends Super { 12. public Sub(int a) { super(a); } 13. public Sub() { this.a= 5; } 14. } Which two, independently, will allow Sub to compile?()AChange line 2 to: public int a;BChange line 2 to: protected int a;CChange line 13 to: public Sub() { this(5); }DChange line 13 to: public Sub() { super(5); }EChange line 13 to: public Sub() { super(a); }
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多选题在过程控制中,若TL=-3,Tu=3,u=1,σ=1,则( )。ACsubP/sub=1 BCsubP/sub=2/3 CCsubPk/sub=1 DCsubPk/sub=2/3
考题
单选题下面不属于《恶臭污染物排放》的是( )。A
p氨(NHsub3/sub)、三甲胺[(CHsub3/sub)sub3/subN]/pB
p硫化氢(Hsub2/subS)、甲硫醇(CHsub3/subSH)br //pC
p甲硫醚[(CHsub3/sub)sub2/subS]、二甲二硫醚/pD
p二硫化碳、氯乙烯/p
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