皮皮学，免费搜题
登录
搜题
【单选题】
哪个文件是用户账户文件，里面存储着和用户账号相关的信息。（）A.
/etc/shadow
B.
/etc/group/passwd
C.
/etc/passwd
D.
/etc/password
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
【单选题】Which of the following is NOT one of the three types of preexperimental designs?
A.
one-shot case study
B.
one-group pretest-posttest design
C.
random group
D.
static group
E.
All are preexperimental designs.
【简答题】Theme-Related Writing Do either one ofthefollowing writing tasks.You should write at least 120 words. 1) Write a short essay entitled"When Facing Adversity".The following outline may be of some help. ...
【单选题】求图中所示电路的戴维南等效电路参数Uoc和等效电阻R O ?
A.
U oc =-9 V, R 0 =6 Ω
B.
U oc =9 V, R 0 =6 Ω
C.
U oc =-9 V, R 0 =4 Ω
D.
U oc =9 V, R 0 =4 Ω
【简答题】求图a、c所示电路的戴维南等效电路。
相关题目：