电力系统的频率稳定是指电力系统维持系统()在某一规定的运行极限内的能力。
A.有功
B.无功
C.电压
D.频率
参考答案:D
单词拼写: (10分)
小题1:Urban inhabitants have to live with the _______(典型的,特有的) noises of cities.
小题2:I was very much pleased by your _________(分析) of the situation.
小题3:The old man was utterly ________(吸引) in the book.
小题4:The scientist often _________(做贡献)to an academic journal.
小题5:The board _________(拒绝) all our ideas.
小题6:The boss is _________(小心谨慎的) about making promises.
小题7:It seemed the water was to ________(责备)
小题8:He is very ________(严格) with his students.
小题9:His wound became ________(感染) with a new virus
小题10:The swimming pool is___________(可利用的) only in summer.
下列法律法规中第一次详细规定各参建单位的安全责任以及政府部门监管责任的是()。
A.《安全生产法》
B.《安全生产许可证条例》
C.《建设工程安全生产管理条例》
D.《建筑法》