某个体的基因型是YYRr,它在减数分裂后形成的配子是() A: YR和YR B: Yr和Yr C: Yy和Rr D: YR和Yr
某个体的基因型是YYRr,它在减数分裂后形成的配子是() A: YR和YR B: Yr和Yr C: Yy和Rr D: YR和Yr
About the average weight of a child, which one of the following may not true? A: 3.5 kg at birth B: 5 kg at 6 m C: 10 kg at 1 yr D: 20 kg at 5 yr
About the average weight of a child, which one of the following may not true? A: 3.5 kg at birth B: 5 kg at 6 m C: 10 kg at 1 yr D: 20 kg at 5 yr
下列哪条语句是正确的( )。 A: char ch[4]="Andy"; B: char ch="Andy"; C: char ch[5];ch[5]="Andy"; D: char ch[5]="Andy";
下列哪条语句是正确的( )。 A: char ch[4]="Andy"; B: char ch="Andy"; C: char ch[5];ch[5]="Andy"; D: char ch[5]="Andy";
1.请写出下列单体聚合得到的聚合物按习惯命名法的名称 (1) CH 2 =CHF (2) CH 2 =CH(CH 3 ) 2 CH 3 | (3) CH 2 =C | COO CH 3 (4) HO-( CH 2 ) 5 -COOH (5) CH 2 CH 2 CH 2 O |__________|
1.请写出下列单体聚合得到的聚合物按习惯命名法的名称 (1) CH 2 =CHF (2) CH 2 =CH(CH 3 ) 2 CH 3 | (3) CH 2 =C | COO CH 3 (4) HO-( CH 2 ) 5 -COOH (5) CH 2 CH 2 CH 2 O |__________|
谓词公式”x(P(x)Ú $yR(y))→Q(x)中量词”x的辖域是() A: P(x)Ú $yR(y) B: P(x) C: $yR(y) D: (P(x)Ú $yR(y))→Q(x)
谓词公式”x(P(x)Ú $yR(y))→Q(x)中量词”x的辖域是() A: P(x)Ú $yR(y) B: P(x) C: $yR(y) D: (P(x)Ú $yR(y))→Q(x)
下列对数组初始化正确的是() A: int a[5]=(1,2,3,4,5); B: int a[5]={1,2,3,4,5,6,7}; C: char ch[5]={″stude″}; D: char ch[5]=″stu″;
下列对数组初始化正确的是() A: int a[5]=(1,2,3,4,5); B: int a[5]={1,2,3,4,5,6,7}; C: char ch[5]={″stude″}; D: char ch[5]=″stu″;
谓词公式(∀x(P(x)∨∃yR(y)))→Q(x)∧R(x)中量词∀x的辖域是 . A: P(x)∨∃yR(y) B: P(x) C: (P(x)∨∃yR(y))→Q(x) D: (∀x(P(x)∨∃yR(y)))→Q(x)∧R(x)
谓词公式(∀x(P(x)∨∃yR(y)))→Q(x)∧R(x)中量词∀x的辖域是 . A: P(x)∨∃yR(y) B: P(x) C: (P(x)∨∃yR(y))→Q(x) D: (∀x(P(x)∨∃yR(y)))→Q(x)∧R(x)
设字符型变量ch已有值,下列语句中错误的是 。 A: scanf("%c%c",ch, ch) B: {int ch=6;printf("%d",ch);} C: 5 D: ch>48&&ch<0x3A
设字符型变量ch已有值,下列语句中错误的是 。 A: scanf("%c%c",ch, ch) B: {int ch=6;printf("%d",ch);} C: 5 D: ch>48&&ch<0x3A
谓词公式"x(P(x)Ú$yR(y))®Q(x)中量词"x的作用域是 A: "x(P(x)Ú$yR(y)) B: P(x)Ú$yR(y) C: P(x) D: P(x),Q(x)
谓词公式"x(P(x)Ú$yR(y))®Q(x)中量词"x的作用域是 A: "x(P(x)Ú$yR(y)) B: P(x)Ú$yR(y) C: P(x) D: P(x),Q(x)
谓词公式∀x(P(x)∨∃yR(y))→Q(x)中量词∀x的辖域是() A: ∀x(P(x)∨∃yR(y)) B: P(x) C: P(x)∨∃yR(y) D: P(x),Q(x)
谓词公式∀x(P(x)∨∃yR(y))→Q(x)中量词∀x的辖域是() A: ∀x(P(x)∨∃yR(y)) B: P(x) C: P(x)∨∃yR(y) D: P(x),Q(x)