mary would like to display a collapsed section on her video catalog form, she has created a section buy when she display the form in the client the section always opens expanded. which one of the following should mary do to collapse the section?（） nothing. Sections always open expanded 。 modify the section default properties to collapsed 。 modify the form propenties to display all sections collapsed 。 modify the section opened for reading property to auto-collapse&e。
在Excel中不能给文字添加哪种文字效果：（） 删除线。 双删除线。 上标。 下标。
During an attempt to 'scp' between two hosts, an error indicating PRNG is not seeded is displayed. What is the likely cause of the error?（） The sshd user id is locked.。 The /var/empty directory needs to be created.。 PRNG is set to 'no' in the /etc/ssh/sshd_config file.。 The permissions on /dev/random and /dev/urandom are incorrect.。
充装工业用液化石油气的气瓶字样为（）。 液化气；。 液化石油气；。 液化混合气；。
简述我国股份合作制经济的基本特征。
闸调器标志牌刻打大修日期与大修厂标记之间须间隔（）。
