移动视频业务是通过移动网络和移动终端为用户提供视频内容的新型通信服务，其主要特征在于传送的内容是比文本、语音更加高级的视频图像（Video），并可以伴有音频（Audio）信息，按所面向的用户，移动视频业务属于（）。 政企业务。 个人业务。 家庭业务。 公客业务。
An administrator created a .env file in a user's home directory to configure a number of custom environment variables for a local application. However, after the user logs out and then logs back into the system, the custom variables are not being set. What is the most likely reason that the custom .env file is being ignored?（） A shell other than ksh is being used by the user.。 The line 'export ENV=$HOME/.env' is missing from /etc/profile.。 The line 'export ENV=$HOME/.env' is missing from the user's .profile.。 The env_profile attribute is not defined for the user within /etc/security/user.。
The storage specialist sized a DS8800 proposal with eight host adapters in the four-port version. 240 drives of the 146GB-15k rpm type will be installed. The proposal needs to meet a very competitive price. The customer will have only minor capacity growth in the future. Which of the following solutions best meets these requirements（） offer a DS8800 one-frame system in four-way processor version and standard cabling。 offer a DS8800 one-frame system in two-way processor version and business class cabling。 offer a DS8800 one-frame system in two-way processor version and standard cabling。 offer a DS8800 one-frame system in four-way processor version and business class cabling。
两闸瓦托中心至支柱中心距离差段修限度不大于（）。 3mm。 5mm。 10mm。 15mm。
以下哪个产品的机械臂上带有冗余的双磁带抓取器，每个抓取器均可以访问到磁带库中的所有槽位？（） IBM TS3310。 IBM TS3500。 SUN SL8500。 Quantum Scalar 10K。
（）是液化石油气瓶内介质处于气―液平衡两项共存状态时，气相部分所占的空间。
