以下选项中,合法的数值型常量是()。 A: 3.2 B: 'X' C: 099 D: 0xEH
以下选项中,合法的数值型常量是()。 A: 3.2 B: 'X' C: 099 D: 0xEH
Which of the following items belongs to balanced population? A: AA 49%; Aa 42%; aa9% B: AA 49%; Aa 26%; aa25% C: AA 25%; Aa 39%; aa36% D: AA 9%; Aa 66%; aa25% E: AA 16% ;Aa 36% ; aa48%
Which of the following items belongs to balanced population? A: AA 49%; Aa 42%; aa9% B: AA 49%; Aa 26%; aa25% C: AA 25%; Aa 39%; aa36% D: AA 9%; Aa 66%; aa25% E: AA 16% ;Aa 36% ; aa48%
设函数$f(x) = x(x - 1)(x - 2) \cdots (x - 99)$,则$f'(0) = $( ) A: 99 B: -99 C: 99! D: -99!
设函数$f(x) = x(x - 1)(x - 2) \cdots (x - 99)$,则$f'(0) = $( ) A: 99 B: -99 C: 99! D: -99!
以下程序的输出结果是:f = lambda x,y:x if x<;y else ya = f("aa","bb" )b == f("bb","aa" )print(a,b) A: aa aa B: aa bb C: bb aa D: bb bb
以下程序的输出结果是:f = lambda x,y:x if x<;y else ya = f("aa","bb" )b == f("bb","aa" )print(a,b) A: aa aa B: aa bb C: bb aa D: bb bb
用天顶距式度盘之经纬仪观测一垂直角,正镜时读数为86°04’39",倒镜时读数为273°55’17",则该垂直角(俯仰角)为:() A: 3°55’19" B: -3°55’19" C: 3°50’39" D: -3°50’39"
用天顶距式度盘之经纬仪观测一垂直角,正镜时读数为86°04’39",倒镜时读数为273°55’17",则该垂直角(俯仰角)为:() A: 3°55’19" B: -3°55’19" C: 3°50’39" D: -3°50’39"
下面程序的输出结果是( )。L=[('b', 3), ('c', 1), ('d', 2), ('a', 5)]L.sort()print(L) A: {('a', 5), ('b', 3), ('c', 1), ('d', 2)} B: [('a', 5), ('b', 3), ('c', 1), ('d', 2)] C: [('c', 1), ('d', 2), ('b', 3), ('a', 5)] D: [('b', 3), ('c', 1), ('d', 2), ('a', 5)]
下面程序的输出结果是( )。L=[('b', 3), ('c', 1), ('d', 2), ('a', 5)]L.sort()print(L) A: {('a', 5), ('b', 3), ('c', 1), ('d', 2)} B: [('a', 5), ('b', 3), ('c', 1), ('d', 2)] C: [('c', 1), ('d', 2), ('b', 3), ('a', 5)] D: [('b', 3), ('c', 1), ('d', 2), ('a', 5)]
对于以下递归函数f,调用函数f(2, ' 1', ' 2', ' 3')的输出结果是( )。void f(int n, char a, char b, char c){ if (n == 1) printf("%c->;%c#", a, b) ; else { f(n-1, a, c, b); printf("%c->;%c#", a, b); f(n-1, c, b, a); }} A: 1->;3#1->;2#3->;2# B: 3->;2#1->;2#1->;3# C: 1->;2#1->;3#3->;2# D: '1'->;'3'#'3'->;'2'#'1'->;'2'#
对于以下递归函数f,调用函数f(2, ' 1', ' 2', ' 3')的输出结果是( )。void f(int n, char a, char b, char c){ if (n == 1) printf("%c->;%c#", a, b) ; else { f(n-1, a, c, b); printf("%c->;%c#", a, b); f(n-1, c, b, a); }} A: 1->;3#1->;2#3->;2# B: 3->;2#1->;2#1->;3# C: 1->;2#1->;3#3->;2# D: '1'->;'3'#'3'->;'2'#'1'->;'2'#
对于以下递归函数f,调用函数f(2, ' 1', ' 2', ' 3')的输出结果是( )。void f(int n, char a, char b, char c){ if (n == 1) printf("%c->%c#", a, b) ; else { f(n-1, a, c, b); printf("%c->%c#", a, b); f(n-1, c, b, a); }} A: 3->2#1->2#1->3# B: 1->2#1->3#3->2# C: '1'->'3'#'3'->'2'#'1'->'2'# D: 1->3#1->2#3->2#
对于以下递归函数f,调用函数f(2, ' 1', ' 2', ' 3')的输出结果是( )。void f(int n, char a, char b, char c){ if (n == 1) printf("%c->%c#", a, b) ; else { f(n-1, a, c, b); printf("%c->%c#", a, b); f(n-1, c, b, a); }} A: 3->2#1->2#1->3# B: 1->2#1->3#3->2# C: '1'->'3'#'3'->'2'#'1'->'2'# D: 1->3#1->2#3->2#
f(x)在[0,1]上有连续的二阶导数,f(0)=f(1)=0,任意x属于[0,...715af2ac3f81f8.png"]
f(x)在[0,1]上有连续的二阶导数,f(0)=f(1)=0,任意x属于[0,...715af2ac3f81f8.png"]
background:url(2、png),url(1、jpg),url(3、png),url(4、jpg);},表示哪张图片处在最上层() A: 2、png B: 1、jpg C: 3、png D: 4、jpg
background:url(2、png),url(1、jpg),url(3、png),url(4、jpg);},表示哪张图片处在最上层() A: 2、png B: 1、jpg C: 3、png D: 4、jpg