往复式压缩机与离心式压缩机相比，转速（），结构复杂，日常维修量大，动平衡性差，排气（）。
产成品及库存商品的评估适用的方法有（）。 现值法。 成本法。 市场法。 分类评估法。 收益法。
A customer is developing a custom application that involves a multistep provisioning process for a new account. There is a custom Java client application that is generating multiple JMS messages as part of the process and sending them to the WebLogic tier where they are processed. Which three steps must you take to implement the solution to allow for scalability and parallel processing of multiple simultaneous provisioning requests while ensuring messages for an individual process are not delivered out of order?（） Update the client application that is creating the JMS messages to use Unit of Work.。 Configure a WebLogic Cluster for Distributed JMS.。 Update the client application that is creating the JMS messages to use Unit of Order.。 Enable XA Transactions on the JMS Connection Factory used by the client application.。 Enable Load Balancing on the JMS connection factory used by the client application.&e。
蓄电池在通信设备中一般采用（）工作制。 均充。 浮充。 不充。
What is true about a background engine? （）(Choose two.) It is a server-side PL/SQL procedure.。 When executing a PL/SQL function activity, it will automatically ping (cache) the PL/SQL code.。 It executes deferred activities in decreasing order of their Cost property value (activities with higher cost value are processed first).。 It would fail if another background engine process is started to handle the same type of activities within the same item type.。 During its single invocation, it processes activities that were stuck, deferred or timed out when the background engine was started.。
You can back up the RMAN recovery catalog with RMAN.（）
