谷类食物是我国居民传统膳食的主体,是人类最好的基础食物。
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干冰法测原油凝固点,试验温度在0℃以上用盐和碎冰作冷却剂。
A. 正确
B. 错误
用于隔离淡水与盐水的半透膜称为反渗透膜。反渗透膜多用高分子材料制成,目前,用于水处理的反渗透膜多为()复合材料制成。
A. 醋酸纤维
B. 聚酰胺
C. 芳香聚酰胺
在锅炉上使用的金属管道,应根据输送介质的特性、温度、压力、流量、允许压力降、允许温度降等因素来确定管道的()、()、()、()、()。
Your database is configured on non-ASM disk storage. You need to migrate your database to ASM disk storage. Which statement is true about migrating from non-ASM disk storage to ASM disk storage?()
A. You can use the operating system utility to migrate from non-ASM disk storage to ASM disk storage.
B. You cannot perform a database backup from non-ASM disk storage to tape and then move it to ASM disk storage.
C. You can use the SWITCH DATABASE TO COPY Recovery Manager (RMAN) command to switch back to non-ASM disk storage if you have not deleted your original datafiles.
D. You cannot use Recovery Manager (RMAN) to migrate from non-ASM disk storage to ASM disk storage if you are not using RMAN for your backup and recovery strategies.