综采工作面回撤时，风筒出风口距回撤迎头距离不大于（）。 ["15m","10m","5m"]
You have implemented OMF for redo log management. Which of the following choices reflects a log filename that might be employed when OMF is enabled?（） ["log01.log ","logORCL01.log ","1_2.logALTER ROLLBACK SEGMENT ","ora_1_asdf1234.log"]
下列哪种药物首次服用时可能引起较严重的体位性低血压（） ["哌唑嗪","硝苯地平","普萘洛尔","氯沙坦","卡托普利"]
考虑地震时建筑场地的类别按下列哪条原则划分？（） ["据场地土类别划分","根据土层的剪切波速划分","根据场地覆盖层厚度划分","根据土层等效剪切波速和场地覆盖层厚度划分"]
一般来说，为了达到组织活动的有效性，应尽量增加管理层。
花色素因以（）形式存在，具有（）的通性，故水溶性（）。
