（ ）命令可以实现查看/etc/passwd文件的前10行的命令。 A: less -10 /etc/passwd B: more -n 10 /etc/passwd C: tail -10 /etc/passwd D: head -10 /etc/passwd

Word文档文件的扩展名是（） A: txt\n B: wps\n C: dot\n D: doc

Which is suitable for vacuum aspiration？ A: pregnancy of less than 10 weeks B: pregnancy of less than 12 weeks C: pregnancy of less than 14 weeks D: pregnancy of less than 16 weeks E: pregnancy of less than 18 weeks

Word文档的缺省类型是。 A: DOT\n B: DOC\n C: TXT\n D: WORD

The small company developed into an international _________ in less than 10 years.

查看文件a.txt前十行内容的命令是() A: head-n10a.txt B: more-n10a.txt C: taila.txt D: less-n10a.txt

将任意一个两位正整数N的个位数与十位数对换的表达式是______。 A: (N-Int(N/10)*10)*10+Int(N/10) B: N-Int(N)/10*10+Int(N)/10 C: Int(N/10)+(N-Int(N/10)) D: (N\10)*10+(N Mod 10)

查看家目录下以“.c”结尾的文件内容,并显示行号( )?(1.0) A: cat -n ~/*.c B: cat -n ~/*.txt C: cat -m ~/*.txt D: cat -m ~/*.c

用Windows2000导出的注册表文件的扩展名是（） A: SYS\n B: REG\n C: TXT\n D: BAT

Food prices increased ________ 10% in less than a year. A: for B: to C: by D: at