测定外源化学物LD50(LC50),通常要求计算实验动物接触化合物之后多长时间内的总死亡数()A、2天B、4天C、7天D、14天E、30天
测定外源化学物LD50(LC50),通常要求计算实验动物接触化合物之后多长时间内的总死亡数()
- A、2天
- B、4天
- C、7天
- D、14天
- E、30天
相关考题:
有一过程如下:Sub Sub1(m As Integer,total As Long)Dim i As Integertotal=1For i=1 To mtotal=total*iNextEnd Sub调用它的事件过程如下:Private Sub Command1_Click()Dim tot As Long,a As Integera=Val(InputBox("请输入数据"))Call Sub1(a,tot)Print totEnd Sub则输入数据5,运行结果为【 】。
(12)有下列Sub过程: Sub Sub(x As Single,y As Single) t=x x=t/y y=t Mody End Sub 在窗体上的命令按钮Commandl中,编写下列事件过程,执行该事件过程调用Sun过程,结果是( )。 Private Sub Commandl_Click() Dim a As Single Dim b As Single a=5 b=4 Sun a,b Print a;b End Sub A.1.25 1 B.5 4 C.4 5 D.1 1.25
II型呼吸衰竭合并代谢性酸中毒()。 A、Pa0/sub2/supsubno60mHl.PaCO/sub2/supsubno50mmlgB、Pa0/sub2/supsubno60mHgPaCO/sub2/supsubno45mmgC、Pa0/sub2/supsubno60mmHgPaCO/sub2/supsubno50mmHD、Pa0/sub2/supsubno60mHg、PaCO/sub2/supsubno45mmHgE、Pa0/sub2/supsubno60mHg、PaC0/sub2supsubno45mmHg
窗体Form1上有一个名称为Command1的命令按钮,以下对应窗体单击事件的事件过程是( )。A.Private Sub Form1 Click( )End Sub···B.Private Sub Form1. Click( )End Sub···C.Private Sub Command1 click( )End Sub···D.Private Sub Command Click( )End Sub···
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
有如下程序: Private Sub Command1_Click() Dim a As Single Dim b As Single a=5:b=4 Call Sub1(a,b) End Sub Sub Sub1(x As Single,y As Single) t=X X=t\Y Y=t Mod y End Sub 在调用运行上述程序后,a和b的值分别为A.0 0B. 1 1C.2 2D.1 2
A、PH7.38,PaOSUB2/SUB50mmHg,PaCOSUB2/SUB40mmHgB、PH7.30,PaOSUB2/SUB50mmHg,PaCOSUB2/SUB80mmHgC、PH7.40,PaOSUB2/SUB60mmHg,PaCOSUB2/SUB65mmHgD、PH7.35,PaOSUB2/SUB80mmHg,PaCOSUB2/SUB20mmHgE、PH7.25,PaOSUB2/SUB70mmHg,PaCOSUB2/SUB20mmHg血气分析结果符合代偿性代谢性酸中毒( )
假定有如下的Sub过程:Sub Sub1(x As Single,y As single)t=xx=t/yy=t Mod yEnd Sub在窗体上画一个命令按钮,然后编写如下事件过程:Private Sub Command1_click()Dim a As SingleDim b As Singlea=5b=4Sub1 a,bPrint a;bEnd Sub程序运行后,单击命令按钮,输出结果为A.B.C.D.
假定有如下的Sub过程:Sub Sub1(x As Single, y As single)t=xx=t / yy=t Mod yEnd Sub在窗体上画一个命令按钮,然后编写如下事件过程:Private Sub Command1_Click()Dim a As SingleDim b As Singlea=5b=4Sub1 a,bPrint a;bEnd Sub程序运行后,单击命令按钮,输出结果为A.54B.] 1]]1C.] 1.2]]5.4D.] 1.25]]1
假定有如下的Sub过程:Sub Sub1 (x As Single, y As Single) t=x x = t/y y = t Mod yEnd Sub 在窗体上画一个命令按钮,然后编写如下事件过程:Private Sub Command1_ Click() Dim a As Single Dim b As Single a = 5 b = 4 Sub1 a, b Print a; b End Sub 程序运行后,单击命令按钮,输出结果为______。A.5 4B.1 1C.1.2 5.4D.1.25 1
动脉血气分析符合哪几项时可作为慢性呼衰的诊断标准( )A.PH7.35C.PACOSUB2SUB2/SUB>6.65kpa(50mmHg)D.PaOSUB2/SUB<7.89(60mmHg)E.PaCOSUB2/SUB>7.89(60mmHg)
窗体Form. 1上有一个名称为Command 1的命令按钮,以下对应窗体单击事件的事件过程是A)Private Sub Form. 1_Click() B)Private Sub Form. _Click()End Sub End SubC)Private Sub Commandl_Click() D)Private Sub Command_ Click()End Sub End Sub
class super { public int getLength() {return 4;} } public class Sub extends Super { public long getLength() {return 5;} public static void main (String[]args) { super sooper = new Super (); Sub sub = new Sub(); System.out.printIn( sooper.getLength()+ “,” + sub.getLength() }; } What is the output?() A、 4, 4B、 4, 5C、 5, 4D、 5, 5E、 The code will not compile.
class Super { public int getLenght() { return 4; } } public class Sub extends Super { public long getLenght() { return 5; } public static void main(String[] args) {Super sooper = new Super(); Sub sub = new Sub(); System.out.println( sooper.getLenght() + “,” + sub.getLenght() ); } } What is the output? ()A、 4,4B、 4,5C、 5,4D、 5,5E、 Compilation fails.
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
将硬盘C:///SUB下的全部文件(总长度超过5MB)备份到软盘,用()命令一定不可以。A、BACKUP C://SUB/*.*A:B、BACKUP C:///SUB A:C、COPY C:///SUB A:D、BACKUP C:///SUB B:
单选题变直径圆管流,细断面直径d1,粗断面直径d2=2d1,粗细断面雷诺数的关系是( )。ApResub1/sub=0.5Resub2/sub/pBpResub1/sub=Resub2/sub/pCpResub1/sub=1.5Resub2/sub/pDpResub1/sub=2Resub2/sub /p
单选题永续盘存法公式为()AKsubt/sub+1=Isubt/sub-(1-δ)Ksubt/subBKsubt/sub+1=It+(1-δ)Ksubt/subCKsubt/sub+1=Isubt/sub+(1+δ)Ksubt/subDKsubt/sub+1=Isubt/sub-(1+δ)Ksubt/sub
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Ap1Ksubm/sub/pBp2Ksubm/sub/pCp3Ksubm/sub/pDp4Ksubm/sub/pEp5Ksubm/sub/p
单选题class super { public int getLength() {return 4;} } public class Sub extends Super { public long getLength() {return 5;} public static void main (String[]args) { super sooper = new Super (); Sub sub = new Sub(); System.out.printIn( sooper.getLength()+ “,” + sub.getLength() }; } What is the output?()A 4, 4B 4, 5C 5, 4D 5, 5E The code will not compile.
单选题class Super { public int getLenght() { return 4; } } public class Sub extends Super { public long getLenght() { return 5; } public static void main(String[] args) {Super sooper = new Super(); Sub sub = new Sub(); System.out.println( sooper.getLenght() + “,” + sub.getLenght() ); } } What is the output? ()A 4,4B 4,5C 5,4D 5,5E Compilation fails.
单选题下列测量结果的表示中,错误的是()。ApIsubS/sub=10.0413A,Usubrel/sub=5×10sup-5/sup,k=2 /pBpIsubS/sub=10.0413(1±5×10sup-5/sup)A,k=2 /pCpIsubS/sub=(10.0413±5×10sup-5/sup)A,k=2 /pDpIsubS/sub=10.0413A,Usub95rel/sub=5×10sup-5/sup,Vsubeff/sub=9 /p
单选题正态分布时,算术平均数、中位数、众数的关系为()Amsub0/sub<msube/sub<(xBmsub0/sub=msube/sub=(xCmsub0/sub>msube/sub>(xDmsube/sub<msub0/sub<(x
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); }
多选题下列表示中____的表示形式是正确的。ApUsub95/sub= 1%,vsubeff/sub =9 /pBpUsubr/sub= 1%,k=2 /pCpusubC/sub=0. 5% /pDpusubC/sub=±0 5%.k=1 /p
多选题设up为标准正态分布的p分位数,则有( )。Ausub0.49/sub>0 Busub0.3/sub<usub0.4 /subCusub0.5/sub=0 Dusub0.23/sub=-usub0.77 /subEusub0.5/sub=-usub0.5/sub
不定项题水生生态调查初级生产量测定方法有( )。A氧气测定法B放射性物测定法CpC0sub2/sub测定法/pD叶绿素测定法