变压器真空注油后保持规定的真空度不少于()。 8小时。 4小时。 24小时。
二元相图中有哪些几何规律?
根据共同犯罪人在共同犯罪中所处的地位和所起的作用,可以分为() 胁从犯。 主犯。 教唆犯。 从犯。
You are working on a CATDB database that contains an Oracle Database version 11.1 catalog schema owned by the user RCO11. The INST1 database contains an Oracle Database version 10.1 catalog schema owned by the user RCAT10. You want the RMAN to import metadata for database IDs 1423241 and 1423242, registered in RCAT10, into the recovery catalog owned by RCO11. You executed the following commands: RMAN> CONNECT CATALOG rco11/password@catdb RMAN> IMPORT CATALOG rcat10/oracle@inst1 NO UNREGISTER; Which two statements are true regarding the tasks accomplished with these commands?() They import all metadata from the RCAT10 catalog.。 They unregister the database from the RCAT10 catalog.。 They do not register the databases registered in the RCAT10 catalog.。 They register all databases registered in the RCAT10 catalog.。
我国下列天文成就,产生于先秦时期的有()。①最早记录太阳黑子②最早记录哈雷慧星③最早的天文学著作 ①②③。 ②③。 ①③。 ①②。
魏某,创伤性休克后,护士抽血时不易抽出,易凝固,皮肤有出血瘀点、紫斑,伤口、注射部位出血,应考虑为()