一患者因高热2d未进食，自述口渴、唇干，尿少色黄，尿比重1.028，血清钠为156mmol/L，应首先静脉点滴（） 5％葡萄糖溶液。 5％葡萄糖生理盐水。 平衡液。 5％碳酸氢钠。 3％氯化钠溶液。
Your database is functioning in ARCHIVELOG mode. In which two situations would you perform a cancelbased recovery？（） You find that one of the redo log members in each redo log group is lost.。 You find that a data file that belongs to the USERS tablespace is damaged.。 You find that a data file that belongs to the SYSTEM tablespace is damaged.。 You find that the current redo log group is damaged and is not available for recovery.。 You realized while performing a recovery that an archived redo log file needed for recovery is lost.。
刘削原始平板时，在刮研后，为了进一步消除扭曲，并提高精度，可采取对角研的方法进行补救。
下列关于梁中钢筋保护层厚度的说法，正确的是（）。 主筋表面至梁表面的距离。 主筋形心至梁表面的距离。 箍筋表面至梁表面的距离。 箍筋形心至梁表面的距离。
When a staging server is used as an environment for testing new data in a default WebSphere Commerce installation， which of the following are true about the staging server？（） The database has a subset of the tables in the production server database.。 The database has a copy of selected data from the production database。 The database logs changes for later propagation.。 The database is accessed as read-only to prevent data corruption.。 The database includes all user and order data for offline processing.。
囊式封堵器适用的介质范围是（）
