塑性砼:混凝土拌合物坍落度为10~90mm的混凝土。
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表示物体所带电荷多寡的程度的物理量称为电量。
A. 正确
B. 错误
混流式水轮机总体由引水、导水、工作和排水四部分组成。
A. 正确
B. 错误
铁路货车故障处理种类中,侧架导框纵向与滚动轴承外圈接触属于()。
A. 大件修
B. 小件修
C. 摘车临修
D. 临时整修
Which two statements are true about encrypting RMAN backup?()
A. The transparent encryption of backups uses the encryption wallet
B. The database uses the same encryption key for every encrypted backup
C. The password encryption of backups only uses the password while creating and restoring backup
D. If transparent encryption is configured, you cannot use the SET ENCRYPTION BY PASSWORD command to make password-protected backu