本田VTEC系统，可变气门正时机构为了实现单气门与双气门之间的顺利切换，在主进气摇臂上装有一（）。 ["正时板","正时活塞","正时链条"]
瓦斯保护动作原因。
“没有运动的物质和没有物质的运动一样，都是不可想象的”，这是（）的观点。 ["诡辩论","形而上学","唯心主义","唯物辩证法"]
流动负债融资的利息不固定，偿还期限短，加之成本高，因而风险大。
A Windows Azure application stores data in a SQL Azure database. The application will start an operation that includes three insert statements. You need to recommend an approach for rolling back the entire operation if the connection to SQL Azure is lost. What should you recommend？（） [" Ensure that all statements execute in the same database transaction."," Create a stored procedure in the database that wraps the insert statements in a TRY CATCH block."," Create a stored procedure in the database that wraps the insertstatements in a TRANSACTION block."," Open a new connection to the database. Use a separate transaction scope to roll back the original operation."]
网络型组织的特征有哪些？
