The mirror test is used to investigate children’s recognition of ( ). A: Spiritual self B: Subjective self C: Material self D: Objective self
The mirror test is used to investigate children’s recognition of ( ). A: Spiritual self B: Subjective self C: Material self D: Objective self
以零作除数时会引发()异常。 A: VALUE_ERROR B: ZERO_DIVIDE C: STORAGE_ERROR D: SELF_IS_NULL
以零作除数时会引发()异常。 A: VALUE_ERROR B: ZERO_DIVIDE C: STORAGE_ERROR D: SELF_IS_NULL
以零做除数会引发什么异常() A: value_error B: zero_divide C: Storage_error D: self_is_null
以零做除数会引发什么异常() A: value_error B: zero_divide C: Storage_error D: self_is_null
以下程序的输出结果是()。 classA: deffun1(self):print("fun1A") deffun2(self):print("fun2A") classB(A): deffun1(self):print("fun1B") deffun3(self):print("fun2B") b=B() b.fun1() b.fun2() a=A() a.fun1() a.fun2()
以下程序的输出结果是()。 classA: deffun1(self):print("fun1A") deffun2(self):print("fun2A") classB(A): deffun1(self):print("fun1B") deffun3(self):print("fun2B") b=B() b.fun1() b.fun2() a=A() a.fun1() a.fun2()
在SQL语句中,以下表达式值为“1”的是______。: NULL is NULL/#/NULL is not NULL/#/NULL=NULL/#/NULL!=NULL
在SQL语句中,以下表达式值为“1”的是______。: NULL is NULL/#/NULL is not NULL/#/NULL=NULL/#/NULL!=NULL
self表示
self表示
select (null or null),(null or 1),(null || 0),(-8 or 0);
select (null or null),(null or 1),(null || 0),(-8 or 0);
使用SQLiteDatabase对象db,从user表中查找name为tom的记录,使用的语句为: A: db. query("user",null,"name=?",new String[]{"tom"},null,null,null) B: db. query("user",null,"name",new String[]{"tom"},null,null,null) C: db. query("user",null,"name=?",new String[]{tom},null,null,null) D: db. query("user",null,"name=tom",null,null,null,null)
使用SQLiteDatabase对象db,从user表中查找name为tom的记录,使用的语句为: A: db. query("user",null,"name=?",new String[]{"tom"},null,null,null) B: db. query("user",null,"name",new String[]{"tom"},null,null,null) C: db. query("user",null,"name=?",new String[]{tom},null,null,null) D: db. query("user",null,"name=tom",null,null,null,null)
class Student:def __init__(self,name,age):self.name=nameself.age=agedef fun1(self):print("hello")( )def fun2(self):print("yes")child=Child("Tom",20)child.fun1()
class Student:def __init__(self,name,age):self.name=nameself.age=agedef fun1(self):print("hello")( )def fun2(self):print("yes")child=Child("Tom",20)child.fun1()
select (NULL<=>NULL) is NULL;的结果为_____
select (NULL<=>NULL) is NULL;的结果为_____