An operator needs to create /dir1/dir2/dir3. The /dir1 does not exist. What command can be used to create dir2 and dir3?（）

[单选题]主病脏气衰微，或疼痛、惊恐、跌打损伤等病证的脉象是（）

[单选题]刘某，男性，素体不强，易反复感冒，气短懒言，自汗，时寒时热，舌质淡，苔薄白，脉虚弱。若日久不愈，症见口干唇燥，纳呆，干呕，面色潮红，大便干结，舌干，少苔，脉细数。治疗选方（）

[单选题]The system administrator did a new install of AIX on a server about a week ago. The system was not rebooted after the installation. CDE is running on this system as is TCPIP. The system administrator has started configuring the system percompany directives. The power cable was inadvertently disconnected from the wall causing the sever to lose power. Upon reboot, the system appears to hang during log in from the console or from Xterminals. Which of the following is the most probable cause?（）

[单选题]，1，，（　　）。

[问答题]如何调整经纱的排列？

[单选题]社会工作研究中，撰写调查研究报告的基本原则是（）。

[填空题]根据通信节点的数量，视频会议系统可以分为：（）和（）两类。

[多选题]牛乳的酸度是反映牛乳（）的重要指标。

[问答题]乳腺囊性增生病的治疗原则

[单选题]26岁，月经规律，停经50天，少量阴道出血6天，偶有腹痛。妇科检查：宫颈软，宫体稍大而软，附件无异常。该病人最可能的诊断是（）