打油时泵憋压在（） 0.5MPa左右。 0.1MPa左右。 0.2MPa左右。
绿荫树类（庭荫树类）
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 the RMAN. To accomplish the backup， you issued the following RMAN command： RMAN> BACKUP SECTION SIZE 300M TABLESPACE users； Which two statements are true regarding the execution of the above command？（） The RMAN parallelizes the backup although the parallelism is not set for a channel.。 The backup piece size will be limited to 300 MB.。 The operation is accomplished using the default channel available.。 Three channels for the tape drive must be configured by setting the parallelism to three.。
利用Image对象的哪个属性设置，可以使Image对象的显示区域随着调入图像的大小自动调整以显示全图（） Stretch。 AutoSize。 Align。 Center。
使机械能可以转化为电能的科学发现的奠基者是（）。 牛顿。 法拉弟。 西门子。 赫兹。
Given:
What is the result？（）
