某变电所一开关事故跳闸时,主站收到保护事故信号,而未收到开关变位信号,其原因为()。

题型:单项选择题

问题:

某变电所一开关事故跳闸时,主站收到保护事故信号,而未收到开关变位信号,其原因为()。

A、通道设备故障;

B、保护装置故障;

C、开关辅助接点故障;

D、RTU故障。

考点:电网调度运行人员考试电网调度自动化维护员高级工电网调度自动化维护员高级工题库
题型:单项选择题

选择与句子画线部分意思相同或相近的词或短语。

1. Debbie will have fun looking for the Easter eggs. [ ]

A. enjoy

B. dislike

C. try

D. keep

2. Finally, we went home together. [ ]

A. At least

B. At last

C. At most

D. At first

3. To rise early is a good habit.[ ]

A. go to bed

B. go home

C. put up

D. get up

4. The snow melts quickly in the warm sun. [ ]

A. becomes solid

B. becomes cold

C. becomes liquid

D. becomes hot

5. We won't see any flowers until May.[ ]

A. We will see flowers only in May.

B. We won't see flowers after May.

C. We will see flowers before May.

D. We will see flowers when May comes.

题型:单项选择题

下述骨巨细胞瘤的描述中,不正确的是()

A.病变骨皮质变薄并向外膨出

B.可见囊状透光区向一侧生长

C.起源于间充质细胞

D.多见于股骨、胫骨、桡骨骨端

E.发生在干骺端

题型:单项选择题

假性牙周袋又称为

A.龈袋
B.骨上袋
C.骨下袋
D.复合袋
E.复杂袋

题型:单项选择题

饰面板(砖)工程材料进场后不需要进行复验的项目是()

A、花岗岩的放射性

B、外墙陶瓷面砖的吸水率

C、水泥的凝结时间

D、水泥的生产日期

题型:单项选择题

下属单位之间经常有用来确定绩效的内部结算业务往来,请问各下属单位是否需缴纳企业所得税?

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