设“图书编号”是表“TBOOK”中的一个字段,若要查询“图书编号”为“26”或 “38”的记录,正确的SQL语句是( )。 A: SELECT * FROM TBOOK WHERE 图书编号="26" AND "38" B: SELECT * FROM TBOOK WHERE 图书编号 IN ("26"AND"38") C: SELECT * FROM TBOOK WHERE 图书编号="26" OR 图书编号="38" D: SELECT * FROM TBOOK WHERE 图书编号 ="26" AND 图书编号 ="38"
设“图书编号”是表“TBOOK”中的一个字段,若要查询“图书编号”为“26”或 “38”的记录,正确的SQL语句是( )。 A: SELECT * FROM TBOOK WHERE 图书编号="26" AND "38" B: SELECT * FROM TBOOK WHERE 图书编号 IN ("26"AND"38") C: SELECT * FROM TBOOK WHERE 图书编号="26" OR 图书编号="38" D: SELECT * FROM TBOOK WHERE 图书编号 ="26" AND 图书编号 ="38"
In the following descriptions, which are correct? A: The C1-FF structure with "AND" gate can be regarded as a "signal sensitivity delay" unit. B: The C1-FF structure with the “OR” gate can be regarded as a persistence detection unit. C: Incoherent feedforward I1-FF can be regarded as a pulse generator. D: Incoherent feedforward I1-FF can be regarded as a response accelerator. E: Both feedback inhibition and incoherent feedforward I1-FF have the function of accelerating response.
In the following descriptions, which are correct? A: The C1-FF structure with "AND" gate can be regarded as a "signal sensitivity delay" unit. B: The C1-FF structure with the “OR” gate can be regarded as a persistence detection unit. C: Incoherent feedforward I1-FF can be regarded as a pulse generator. D: Incoherent feedforward I1-FF can be regarded as a response accelerator. E: Both feedback inhibition and incoherent feedforward I1-FF have the function of accelerating response.
有如下代码:public class Test{ public static void main(String args[]) { String str = new String("World"); char ch[] = {'H','e','l','l','o'}; change(str,ch); System.out.println(str + "and" + ch); } public static void change(String str, char ch[]) { str = "Changed"; ch[0] = ' C'; }}运行后输出的结果是: A: Changed and Cello B: World and Cello C: World and CelloChanged and Hello D: World and Hello
有如下代码:public class Test{ public static void main(String args[]) { String str = new String("World"); char ch[] = {'H','e','l','l','o'}; change(str,ch); System.out.println(str + "and" + ch); } public static void change(String str, char ch[]) { str = "Changed"; ch[0] = ' C'; }}运行后输出的结果是: A: Changed and Cello B: World and Cello C: World and CelloChanged and Hello D: World and Hello
Word中插入数学公式的方法是()。 A: "插入"→"形状"→"公式" B: "开发工具"→"公式" C: "插入"→"公式"→"插入新公式" D: "引用"→"插入"→"公式"
Word中插入数学公式的方法是()。 A: "插入"→"形状"→"公式" B: "开发工具"→"公式" C: "插入"→"公式"→"插入新公式" D: "引用"→"插入"→"公式"
定义并初始化一个用于存放我们国家的四个直辖市的数组cityName,四个直辖市为:北京,上海,天津,重庆. 正确的是_________ A: String[] cityName=new String[4]{"北京","上海","天津","重庆"}; B: String[] cityName=new String[]{"北京","上海","天津","重庆"}; C: String[] cityName={"北京","上海","天津","重庆"}; D: String cityName = new String[4] { "北京", "上海", "天津", "重庆" };
定义并初始化一个用于存放我们国家的四个直辖市的数组cityName,四个直辖市为:北京,上海,天津,重庆. 正确的是_________ A: String[] cityName=new String[4]{"北京","上海","天津","重庆"}; B: String[] cityName=new String[]{"北京","上海","天津","重庆"}; C: String[] cityName={"北京","上海","天津","重庆"}; D: String cityName = new String[4] { "北京", "上海", "天津", "重庆" };
已知有一个名为names的空列表,如何向其中添加old_driver,rain,jack,shanshan,peiqi,black_girl 元素? A: names.append("old_driver","rain","jack","shanshan","peiqi","black_girl") B: names.extend("old_driver","rain","jack","shanshan","peiqi","black_girl") C: names.insert("old_driver","rain","jack","shanshan","peiqi","black_girl") D: names.extend(["old_driver","rain","jack","shanshan","peiqi","black_girl"])
已知有一个名为names的空列表,如何向其中添加old_driver,rain,jack,shanshan,peiqi,black_girl 元素? A: names.append("old_driver","rain","jack","shanshan","peiqi","black_girl") B: names.extend("old_driver","rain","jack","shanshan","peiqi","black_girl") C: names.insert("old_driver","rain","jack","shanshan","peiqi","black_girl") D: names.extend(["old_driver","rain","jack","shanshan","peiqi","black_girl"])
以下哪个选项是正确的json数据格式: A: { "id": 2, "userName": admin, "passWord": 12345, "email": admin@qq.com} B: { id: 2, userName: "admin", passWord: "12345", email: "admin@qq.com"} C: { "id": 2, "userName": "admin", "passWord": "12345", "email": "admin@qq.com",} D: { "id": 2, "userName": "admin", "passWord": "12345", "email": "admin@qq.com"}
以下哪个选项是正确的json数据格式: A: { "id": 2, "userName": admin, "passWord": 12345, "email": admin@qq.com} B: { id: 2, userName: "admin", passWord: "12345", email: "admin@qq.com"} C: { "id": 2, "userName": "admin", "passWord": "12345", "email": "admin@qq.com",} D: { "id": 2, "userName": "admin", "passWord": "12345", "email": "admin@qq.com"}
把一个JSON格式数据赋给变量color:color = "色彩":[ "暖色":["红","橙","黄"], "冷色":["青","蓝"], "中性色":["紫","绿","黑","灰","白"] ]以下能够取到冷色“["青","蓝"]”的是哪一个选项?_
把一个JSON格式数据赋给变量color:color = "色彩":[ "暖色":["红","橙","黄"], "冷色":["青","蓝"], "中性色":["紫","绿","黑","灰","白"] ]以下能够取到冷色“["青","蓝"]”的是哪一个选项?_
在Excel中,为表格添加边框的正确的操作是()。 A: 单击"单元格"中的"边框" B: 单击"单元格"中的"边框和底纹" C: 单击"插入"中"边框" D: 单击"插入"中"单元格"
在Excel中,为表格添加边框的正确的操作是()。 A: 单击"单元格"中的"边框" B: 单击"单元格"中的"边框和底纹" C: 单击"插入"中"边框" D: 单击"插入"中"单元格"
下面语句中,正确的是( )。 A: printf("%c ","student"); B: printf("%c ","c"); C: printf("%s ",&a); D: printf("%s ","hello");
下面语句中,正确的是( )。 A: printf("%c ","student"); B: printf("%c ","c"); C: printf("%s ",&a); D: printf("%s ","hello");