下渗率总是（） 等于下渗能力。 大于下渗能力。 小于下渗能力。 小于、等于下渗能力。
Your developers have asked you to restore the development database， which is in NOARCHIVELOG mode， back to last Tuesday the 20th. Your last backup is from Monday the 19th. What do you do？（） Restore the 19ths backup， restore all archived redo logs， recover the database to the 20th，and open the database.。 Tell them that their request cannot be met with the current backup strategy.。 Restore the 19ths backup， apply the online redo logs，and open the database.。 Switch the database into ARCHIVELOG mode，restore the 19th’s backup，restore all archived redo logs，and recover the database to the 20th.。 Use the recover database command to roll back the database from today to the 19th of the month.。
施工阶段成本控制的要求有（） 人工费的控制。 材料费的控制。 施工机械使用费控制。 施工分包费用的控制。 规划费的控制。
某男性患者，术后禁食，胃肠减压5d，每日输人10%GS20O0ml，5%GNS1000ml，尿量200Oml/d。患者诉乏力，嗜睡，腹胀，恶心，心率110次/min，应补充（） 脂肪乳。 10%CaCI。 10%KCI。 5%NaCI。 ATP。
A customer server has the maximum local storage installed. The customer plans to share this new storage with other servers. Which of the following provides that server additional storage？（） Add External Storage via EXP3000。 Replace current storage with more dense drives。 Add External Storage via SAN。 Add storage expansion blade。
氢气系统优化的最终目标是降低全厂制氢装置能耗，遵循的框架步骤有（）。
