在城市公交客流高峰时段，为了加快车辆周转，车辆在始末站停站时间，不应大于当时行车间隔的（）倍（范围值）。
进城务工的农村居民不能参加失业保险。
Which three statements are true about the working of system privileges in a multitenant control database(CDB) that has pluggable databases (PDBs)?（） System privileges apply only to the PDB in which they are used.。 Local users cannot use local system privileges on the schema of a common user.。 The granter of system privileges must possess the set container privilege.。 Common users connected to a PDB can exercise privileges across other PDBs.。 System privileges with the with grant option container all clause must be granted to a common user before the common user can grant privileges to other users.。
You are working on a 24x7 （available 24 hours per day， 7 days per week） production database. An operating system （OS） user deletes the alert log file accidentally. Which statement in this scenario is true？（） The database crashes.。 The DBA needs to re-create the file.。 The file gets re-created automatically.。 The file gets restored automatically from the last backup.。 The DBA needs to perform a complete database recovery.。 The DBA needs to perform an incomplete database recovery.。
施工方案的拟定应与企业经营理念合理结合，落实经营思想的措施。以下哪个措施不属于正确的做法（） A.自建轧石场，生产路面基层底基层适用的碎石。 。 B.充分利用隧道、路堑开挖石方。优质石料加工后，堆放在适当位臵用于砌石工程，稍次者用于桥涵基坑垫层、路堤填筑等。 。 C.符合标书基础上，水泥混凝土、沥青混凝土尽可能外购商品料。 。 D.路基清表工序实施前，规划好表层耕植土推积、储放办法，工程竣工后，用于临时用地的复耕。。
The human resources department requested an employee report to high light those employees who are due for 30 days 6 months and 1 year evaluation. The higher_data field should display blue text for 30 days employee, a red text for 6 months employees and a green text for one year employees. You created a format trigger on the higher_data field to handle this task. What will happen if the format trigger returns a false value? （）
