某企业生产A产品，每年需要甲零件1000件。该零件可以自制也可以外购。目前该企业已具备自制能力，自制甲零件的完全成本为30元，其中：直接材料20元，直接人工4元，变动性制造费用1元，固定性制造费用5元。假定甲零件的外购单价为26元，且自制生产能力无法转移。要求：作出自制或外购甲零件的决策；
You share your computer with two users who belong to the Users group. You need to ensure that all users are informed of new updates. What should you do？（） ["Enable the Turn on recommended updates via Automatic Updates option.","Enable the Allow non-administrators to receive update notifications option.","Enable the Enable client-side targeting option and specify the target group.","Disable the Do not display "Install Updates and Shut Down" option in Shut Down Windows Dialog box option."]
土方开挖的顺序、方法必须与设计工况相一致，并遵循“（）”的原则。 ["开槽支撑，先撑后挖，分层开挖，严禁超挖","开槽支撑，先挖后撑，分层开挖，严禁超挖","开槽支撑，先撑后挖，一次到位，严禁超挖","开槽支撑，先撑后挖，分层开挖，可视情况超挖"]
加工中心在加工中有一些典型的、固定的几个连续动作一般可用（）来完成。 ["固定循环","刀具半径补偿","刀具长度偏置","螺纹循环"]
Which definition best describes the staff training service component within the wireless implement phase？（） ["develops a training plan and delivers via a custom workshop or e-learning","helps improve the performance and functionality of the infrastructure operations and network management system","reduces the risk of downtime caused by facilities-related problems","provides a step-by-step plan detailing the installation and service-commission requirement tasks to be staged in a controlled implementation environment that emulates a customer network"]
工频交流耐压试验是考验试品承受（）的有效方法，对保证设备的（）具有重大意义。
