题目内容

在国际单位制中,1MPa精确地等于()Kgf/cm2

A. 9.807
B. 10
C. 10.197
D. 0.102

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喇叭裤、直筒裤、锥形裤等不同裤子的流行,这主是因()而引起的。

A. 结构
B. 用途
C. 造型
D. 材料

建设单位申请领取施工许可证时所提交的施工图纸和技术资料应当满足()。

A. 施工需要并按规定通过审查
B. 施工需要并通过监理单位审查
C. 建设单位的要求
D. 施工单位的要求

You want to take the backup of the USERS tablespace. It has a single data file of 900 MB. You have tape drives of 300 MB each. The SBT channel is configured for Recovery Manager (RMAN). To accomplish the backup, you issued the following RMAN command: RMAN> BACKUP SECTION SIZE 300M TABLESPACE users; Which two statements are true about the execution of the above command? ()(Choose two.)

A. The backup piece size will be limited to 300 MB
B. The RMAN uses multiplexing to perform backup
C. The operation is accomplished using the default channel available
D. The RMAN parallelizes the backup although the parallelism is not set for a channel

影响气体溶解度的因素有()。

A. 温度
B. 压力
C. 密度
D. 质量

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