熊彼特认为，正是由于企业家群体的创新，才推动了社会经济的发展。熊彼特所说的创新活动不包括（） A.引进一种新产品 。 B.开辟一个新市场 。 C.实现新的企业组织形式 。 D.扩大生产规模。
实验证明，只有当气体的温度低于某一值时，对其施加压力，才能使之液化，这个温度值叫（）。 液化温度；。 蒸发温度；。 临界温度。
Exhibit， One of the important tables in the USERStablespace was dropped and purged from the recycle bin at 9：00 a.m. You noticed this at 11：00 a.m. and you want to perform an incomplete recovery to recover the table. Which statement is true？（） You must recover all data files to the required system change number （SCN）.。 You must recover all data files， except those that are offline， to the required SCN.。 You must recover all data files belonging to the USERS tablespace to the required SCN.。 You cannot recover all data files because segment space management is performed manually for the undo tablespace.。
Examine the section of the Health Check report given below： DBMS_HM.GET_RUN_REPORT（’HM_RUN_1061’） Run Name ： HM_RUN_1061 Run Id ： 1061 Check Name ： Data Block Integrity Check Mode ： REACTIVE Status ： COMPLETED Start Time ： 2007-05-12 22：11：02.032292 -07：00 End Time ： 2007-05-12 22：11：20.835135 -07：00 Error Encountered ： 0 Source Incident Id ： 7418 Number of Incidents Created ：0 Which two statements are true regarding the Health Check report？（） Health Check was performed manually.。 Health Check was performed to check the disk image block corruptions.。 Health Check was performed to check interblock and intersegment corruption.。 Health Check was performed to verify the integrity of database files and report failures.。 Health Check was performed by the Health Monitor automatically in response to a critical error.。
简述房地产的人文特性有哪些？
下列关于井田制的说法，正确的是（）。①周朝时实行井田制②它是一种奴隶社会的土地私有制度③诸侯臣下只能世代享用，不得转让和买卖④臣下要向周王交纳贡赋⑤奴隶主强迫奴隶在井田上集体耕种
