以下哪几项技术代是云计算的核心技术()。 ["虚拟化","并行计算","网络存储","大数据"]
美国心理学家弗鲁姆提出的期望理论指出,激发力量主要是由()因素组成。 ["保健因素与激励因素","主观因素与客观因素","认知因素与情感因素","目标效价与期望值"]
View the Exhibit and examine the structure of the EMP table. You executed the following command to add a primary key to the EMP table: ALTER TABLE emp ADD CONSTRAINT emp_id_pk PRIMARY KEY (emp_id) USING INDEX emp_id_idx; Which statement is true regarding the effect of the command?() [" The PRIMARY KEY is created along with a new index."," The PRIMARY KEY is created and it would use an existing unique index."," The PRIMARY KEY would be created in a disabled state because it is using an existing index."," The statement produces an error because the USING clause is permitted only in the CREATE TABLE command."]
白僵菌是一种常用来生产微生物农药的细菌。
And the command-line invocations: javac Pass2.java java Pass2 5 What is the result?() ["Compilation fails.","An exception is thrown at runtime.","doStuff x=6,main x =6","doStuff x=6,main x=7","doStuff x=7,main x=6","doStuff x=7,main x=7"]
如何贯彻学前游戏教育实施的主体性原则?