以下哪段代码能把数值516以二进制的形式写入My文件中。 A: BinaryWriter bw = new BinaryWriter(File.Open("My", FileMode.Create));bw.Save(516); B: BinaryWriter bw = new BinaryWriter(File.Open("My", FileMode.Create));bw.write(516); C: BinaryWriter bw = new BinaryWriter(File.Open("My", FileMode.Create));bw.Write(516); D: BinaryWriter bw = new BinaryWriter(File.Open("My", FileMode.Create));bw.save(516);

将“历史报表”存储在c盘我的文档下，文件名为“数据报表1”，其函数表达式是（）。 A: ReportSaveAs ("历史报表", " C:My Documents数据报表1.xls"); B: ReportSaveAs (" C:My Documents数据报表1.xls", "历史报表"); C: ReportSave ("历史报表", " C:My Documents数据报表1.xls"); D: ReportSave (" C:My Documents数据报表1.xls", "历史报表");

设S="Chinese dream my dream"，T="dream"，则index(S, T, 3 )的值为______。 A: 0 B: 9 C: 18 D: 9和18

Please select from following examples mentioning certain authors the one that shows they are an authoritative source. A: In "Global Warming isn't Real," Steven Collins, a professor at the University of Michigan, claims that …… B: Johann Bachman argues in "Global Warming is the Next Best Thing for the Earth" that …… C: In "My Favorite Shoe", Treyvon Jones explains that…… D: ---

The United States launched a trade war against my country, and its main goal is to target my country () A: 5G technology B: human rights C: "Made in China 2025" D: Trade imbalance

下列可作为Windows中文件名的是______。 A: my file B: Basicprogram C: Cord "01" D: class1.data

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" };

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"}