简述金风1500机组是如何进行变桨变速功率控制的?
细胞或生物体的一套完整的遗传物质称为()。 ["基因组","染色体","基因","核酸"]
在合同实施过程中,项目法人可向承包人推荐分包人的情况不包括()。 ["由于重大设计变更导致施工方案重大变化,致使承包人不具备相应的施工能力","由于承包人原因,导致施工工期拖延,承包人无力在合同规定的期限内完成合同任务","建设水利建设工程的主要建筑物的主体结构的","项目有特殊技术要求、特殊工艺或涉及专利权保护的"]
以下不属于造价工程师职业道德教育的意义的事() ["有利于提高造价工程师职业道德水平","有利于培养造价工程师职业道德情感","有利于树立造价职业道德信念","有利于提升社会道德水平"]
A user executes a query on the EMP table, which contains thousands of rows, to get details about employees in one of the departments. The user receives the following error: SQL> SELECT ename FROM emp WHERE deptno=10 ORDER BY sal; SELECT ename FROM emp WHERE deptno=10 ORDER BY sal * ERROR at line 1: ORA01157: cannot identify/lock data file 201 see DBWR trace file ORA01110: data file 201: ’/u01/app/oracle/oradata/orcl/temp01.dbf’ What is a possible reason?() ["The tempfile belonging to the default temporary tablespace is missing.","The database is opened in restricted mode, so queries are not allowed.","The default temporary tablespace required to execute the query is offline.","The default temporary tablespace required to execute the query is dropped.","The default temporary tablespace required to execute the query is readonly."]
指导团队学习,构建学习(),是学习型组织建设的关键环节。