单选题 You wish to kill a process with a PID of 123. Select the command which exiting.()
kill-1 123
kill-9 123
kill-15 123
kill-17 123
单选题 What command will print a list of usernames (first column) and their corresponding user id (uid, third column) from /etc/passwd?()
cut -d: -f 1,3 /etc/passwd
chop -c 1,3 /etc/passwd
tac 1-3/etc/passwd
fmt -u /etc/passwd
单选题 Which of the following commands will change all CR-LF pairs in an imported text file, userlist.txt, to Linux standard LF characters and store it as newlist.txt?()
tr ’/r/n’ < userlist.txt > newlist.txt
tr -c ’/n/r’ < newlist.txt > userlist.txt
tr -d /r¯ < userlist.txt > newlist.txt
tr /r¯/n¯ userlist.txt newlist.txt
tr -s ®^M’¡®^J’ userlist.txt newlist.tx
单选题 What is the output when the following shell script executes?() cat<;<;foobar Hello foobar foobar
The contents of the file foobar.
Hello
No output but a file named foobar is created.
Hello foobar
Hello foobar foobar
单选题 You are running Linux 2.0.36 and you need to add a USB mouse to your system. Which of the following statements is true?()
You need to rebuild the kernel.
You need to upgrade the kernel
You need to load the USB modules for your existing modular kernel.
USB support is not available in Linux.
单选题 What information is displayed by the command cat/proc/dma?()
whether DMA is enabled
which DMA channels are in use
which DMA mode is in use
general information about DMA on the machine
多选题 What does the Filesystem Hierarchy Standard enable? ()
software to predict the location of installed files and directories
software to predict the ownership and access rights to files and directories
users to predict the location of installed files and directories
users to predict how the filesystem should be formatted according to need
单选题 You have read/write permission on an ordinary file foo. You have just run In foo bar. What would happen if you ran rm foo?()
foo and bar would both be removed.
foo would be removed while bar would remain accessible.
foo would be removed, bar would still exist but would be unusable.
Both foo and bar would remain accessible.
You would be asked whether bar should be removed.
单选题 In xorg.conf, which section is concerned with fonts?()
the Fonts section
the Files section
the xfsCodes section
the Graphics section
the modeline section
海南西环高铁于去年底正式开通运营,全球首条环岛高速铁路诞生了。铁路最早出现在()
纵向偏离时,每个车辆转向架所承受的货物重量不得超过货车容许载重量的(),且两转向架承重之差不得大于10t。
采用过户转让的票据多指股票、政府债券和提单等。
周作人散文笔调从容闲逸,别有一种平淡悠远的趣味,其作品《零余者》《写在人生边上》都体现了这种风格。
关于女性输尿管下列哪项是正确的()
中国银行间市场交易商协会(以下简称交易商协会)负责受理企业债务融资工具的发行注册。交易商协会不接受注册的,企业可于( )后重新提交注册文件。
影响横封效果的因素有()
固定资产改良过程发生的变价收入应记入()。
简述脑梗死的治疗原则。
患者输注少白红细胞悬液约1小时时,出现呼吸急促,大汗淋漓,寒战,腰背部剧痛,心前区压迫感,心率120/分钟,呼吸30/分钟,血压75/45mmHg,体温39.8℃。随即出现血红蛋白尿。最可能的临床诊断是()