有关我国的营养状况，下列说法正确的（）。 我国仍存在微量营养素缺乏，但富裕居民蛋白质和脂肪摄入过多的问题已经相当严重 。 我国的营养素缺乏问题仍然相当严重，大部分居民仍然需要增加蛋白质供应 。 我国仍存在微量营养素缺乏，但大部分居民的蛋白质和脂肪摄入都已经过量 。 我国的营养素缺乏问题已经基本解决，大部分居民处于能量过剩的状态。
使用砂轮切管机时，应（）接近工件。 A、快速 。 B、迅速 。 C、缓慢 。 D、较快。
You want to set the following initialization parameters for your database instance： Identify the statement that correctly describes this setting.（） The MANDATORY location must be a flash recovery area.。 The optional destinations may not use the flash recovery area.。 This setting is not allowed because the first destination is not set as MANDATORY.。 The online redo log file is not allowed to be overwritten if the archived log cannot be created in the fourth destination.。
An administrator notices that some of their systems are reporting a number in the eferred Level?column on the HMC pdates?panel. WhatAn administrator notices that some of their systems are reporting a number in the ?eferred Level?column on the HMC ?pdates?panel. What is the meaning of the eferred Level?is the meaning of the ?eferred Level?（） The number denotes the firmware level which will be activated when AIX is next rebooted.。 The number denotes the firmware level which will be activated when all LPARs are next started.。 The number denotes the firmware level which will be activated when the managed system is next restarted.。 The number denotes how many days have elapsed since the firmware was installed without the LPARs being reactivated.。
硅酸盐水泥的终凝时间不得长于（）。 6.5h。 7.5h。 8.5h。 10h。
充风至定压，电子防滑器单车静止试验时，单车试验器须置于（）。
