课外活动的特点包括() 自愿性。 基础性。 广泛性。 自主性。 多样性。
实施性施工进度计划要反映各施工作业相应的()的安排。 总工期。 年度内。 日历天。 季度内。
At the request of a user, you issue the following command to restore a dropped table: flashback table "BIN$F2JFfMq8Q5unbC0ceE9eJg==$0" to before drop; Later, the user notifies you that the data in the table seems to be very old and out of date. What might be the problem?() Because a proper range of SCNs was not specified, the wrong data was restored.。 A proper range of timestamps was not specified, so the wrong data was restored.。 A previous Flashback Drop operation had been performed, resulting in multiple versions of the table being stored in the Recycle Bin.。 Either option A or B could be correct. Not enough information was provided to determine which.。 None of the above.。
围手术期预防性应用抗菌药物,给药时间应选择在() 术前4小时。 术前0.5小时~2小时。 术后0.5小时。 术后4小时。 术后当日。
客户身份资料,自业务关系结束当年计起至少保存()年 5。 10。 20。 长期。
A recent power outage disrupted customer operations in one of the two campus centers. Thecustomer has already started to develop a strategy for consolidation of the data centers andremote backup at a colocation facility, but current and near-term budgets are focused only oncapacity growth at lowest cost. Which of the following capabilities might be immediately attractiveto the customer?()