皮皮学,免费搜题
登录
搜题
【多选题】
次级代谢调节中避免分解代谢物的阻遏作用的方式有( )等。
A.
采用混合碳源,而且严格控制混合碳源中快速利用和缓慢利用的碳源的比例
B.
连续流加快速利用的碳源以保持其低浓度
C.
采用缓慢释放营养物的颗粒剂
D.
采用缓慢释放营养物的溶液
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
.
..
皮皮学刷刷变学霸
举一反三
【简答题】用cat命令在用户主目录下创建一名为f1的文本文件,内容为: Linux is useful for us all You can never imagine how great it is.
【简答题】完形填空。 I believe in my mother. My belief began when I was a kid, when I 1 becoming a doctor. My mother was a 2 . Through her work, she observed that 3 people spent a lot more time 4 than they did watch...
【单选题】管理员希望在创建新用户的时候,自动在用户主目录下放置一个系统使用说明文件ReadMe,他应该( )。
A.
在/etc/default目录下放置ReadMe文件,创建用户后复制该文件
B.
在/etc/profile.d目录中放置ReadMe文件,创建用户后复制该文件
C.
在/etc/skel目录中放置ReadMe文件
D.
修改/etc/profile文件,用cp命令把ReadMe文件复制到用户主目录
【简答题】听问句,选答语。 (     ) 1. A. My father is a businessman. B. My father is 38 years old. (     ) 2. A. My mother likes to watch TV. B. My father likes to play ping-pong. (     ) 3. A. We speak Chinese. B. We ...
【简答题】在用户家目录下用一条命创建一个dir1目录,并在dir1下创建一个名为dir2的目录
【单选题】The policeman asked me ______ and ______ .
A.
what was the matter; what was my name
B.
what was the matter; what my name was
C.
what the matter was; what was my name
D.
what the matter was; what my name was
【多选题】如果要在当前用户主目录中创建一个名为sampledir 的目录,并在该目录下创建一个名为sampledir01的目录,应该输入什么样命令?
A.
mkdir ~/sampledir mkdir ~/sampledir/sampledir01
B.
mkdir ~/sampledir/sampledir01
C.
mkdir ../sampledir
D.
mkdir -p ~/sampledir/sampledir01
【判断题】社会比较会带来幸福感,尤其是和不如你的人比。()
A.
正确
B.
错误
【单选题】若要在用户的主目录下创建一个名为my document的目录,以下命令中正确的是(  )。
A.
mkdir my document
B.
mkdir ‘my document’
C.
mkdir ~/my document
D.
mkdir ~/’my document’
【单选题】The very idea of my sister being a thief is quite______! She is a qualified dentist, a mother of three and a board member of their primary school.
A.
risky
B.
dishonest
C.
futile
D.
absurd
相关题目: