将当前目录下的abc文件复制到当前目录下,更改名称为bbb A: cp abc /bbb B: cp /abc /bbb C: cp /abc ./bbb D: cp ./abc ./bbb
将当前目录下的abc文件复制到当前目录下,更改名称为bbb A: cp abc /bbb B: cp /abc /bbb C: cp /abc ./bbb D: cp ./abc ./bbb
将当前目录下的abc文件复制到当前目录下,更改名称为bbb A: cp ./abc ./bbb B: cp abc /bbb C: cp/abc /bbb D: cp/abc ./bbb
将当前目录下的abc文件复制到当前目录下,更改名称为bbb A: cp ./abc ./bbb B: cp abc /bbb C: cp/abc /bbb D: cp/abc ./bbb
以下连接字符串的代码正确的是( )。 A: $myVar3 = "aaaa" + "bbb"; B: $myVar3 = "aaaa" . "bbb"; C: $myVar3 = "aaaa" join "bbb"; D: $myVar3 = join("aaaa","bbb");
以下连接字符串的代码正确的是( )。 A: $myVar3 = "aaaa" + "bbb"; B: $myVar3 = "aaaa" . "bbb"; C: $myVar3 = "aaaa" join "bbb"; D: $myVar3 = join("aaaa","bbb");
执行lis1 = [x*3 for x in "ABC"]后,lis1结果是( )。 A: ["AAA", "AAA", "AAA"] B: ["BBB", "BBB", "BBB"] C: ["CCC", "CCC", "CCC"] D: ["AAA", "BBB", "CCC"]
执行lis1 = [x*3 for x in "ABC"]后,lis1结果是( )。 A: ["AAA", "AAA", "AAA"] B: ["BBB", "BBB", "BBB"] C: ["CCC", "CCC", "CCC"] D: ["AAA", "BBB", "CCC"]
In 1803 the United States purchased Louisiana from _____.
In 1803 the United States purchased Louisiana from _____.
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在基于RS-485的MODBUS通信中,网关节点发送的报文是:02 02 00 00 00 01 B9 F9,则响应报文正确的是( )。 A: 02 02 01 01 60 0C B: 02 02 02 01 60 0C C: 02 02 01 00 01 60 0C D: 02 02 02 00 60 0C
在基于RS-485的MODBUS通信中,网关节点发送的报文是:02 02 00 00 00 01 B9 F9,则响应报文正确的是( )。 A: 02 02 01 01 60 0C B: 02 02 02 01 60 0C C: 02 02 01 00 01 60 0C D: 02 02 02 00 60 0C
若有chars[3][3]={"AAA","BBB","CCC"};说明语句,则与它等价的语句是()。 A: char**s={"AAA","BBB","CCC"}; B: char*s[3]={"AAA","BBB","CCC"}; C: chars[][5]={"AAA","BBB","CCC"}; D: chars[][3]={"AAA","BBB","CCC"};
若有chars[3][3]={"AAA","BBB","CCC"};说明语句,则与它等价的语句是()。 A: char**s={"AAA","BBB","CCC"}; B: char*s[3]={"AAA","BBB","CCC"}; C: chars[][5]={"AAA","BBB","CCC"}; D: chars[][3]={"AAA","BBB","CCC"};
In 1803, President Jefferson negotiated the purchase of Louisiana from Mexico.
In 1803, President Jefferson negotiated the purchase of Louisiana from Mexico.
下列代码段的输出结果是( ) s=20; if(s>30) System.out.println(‘’AAA``); System.out.println(``BBB``); A: AAA B: BBB C: AAA BBB D: 什么也不显示
下列代码段的输出结果是( ) s=20; if(s>30) System.out.println(‘’AAA``); System.out.println(``BBB``); A: AAA B: BBB C: AAA BBB D: 什么也不显示