【多选题】
关于BE25保护描述正确的是___
A. 触发信号是反应堆上部压力大于18.6MPa，且两个热腿冷却剂温度大于278℃。
B. 会启动辅助给水泵
C. 开启LAB10-40AA113/212
D. 切除汽机
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相关试题
【多选题】
DA21信号动作后逻辑顺序如下_________
A. BDA（BDC）电压<2.52KV延时2秒
B. 根据分级启动程序投入用户
C. 当柴油机转速>1000rpm&柴油发电机出口电压>6.3KV时合Q5
D. 断开Q3,Q4并且启动相应通道的机组柴油机
【多选题】
AB22――第二类预保护PP1触发条件_________
A. 工作量程测得的中子通量变化周期小于40s
B. 工作量程测得的中子通量密度超过允许值1.5%
C. 堆芯上部压力大于16.2MPa
D. 单束控制棒落入堆芯（&没有APP信号）
【判断题】
当低压安注转地坑运行之后，低压安注再循环管线阀门将被关闭。低压安注泵的压头为1.5MPa，如果堆芯上部压力大于2.0MPa，将不能保证泵的最小工作流量，这样将会造成泵体损伤，所以要停泵
A. 对
B. 错
【判断题】
BC22中蒸汽发生器液位高于正常值0.2m时，关闭LAB10（20，30，40）AA211/212的两个闭锁条件分别是cooldown 或者 高压缸汽门关闭（2v4，保持40秒）
A. 对
B. 错
【判断题】
ATWS的触发信号为：停堆4s后ΔN（ΔN=Ncurr－Ntrip×0.08）>2％Nnom。在停堆前反应堆功率低于 2.174% Nnom 时，ATWS是不会被自动触发.
A. 对
B. 错
【判断题】
安全壳喷淋动作后，当安全壳压力降低到0.09Mpa后，关闭1JMN*0AA101阀门，JMN泵转再循环运行，如果压力继续降低，再关闭1JMN*0AA801阀门
A. 对
B. 错
【判断题】
大SGTR时，在有CD14 SGTR开信号作用时大气释放阀（非故障）全开（信号保持20s），有CD11“reset OPEN BRU-A”或者CD13“reset OPEN BRU-A”或者手动复位CD13信号时①自动投入维持压力4.9Mpa（信号保持5s），②同时投入1LBA10EE001选择60度/小时
A. 对
B. 错
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【单选题】
22. —Do you know the boy________ is sitting next to Peter?
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【单选题】
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( ) 26. Where does the writer of "The little Prince" come from?
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【单选题】
( ) 27. What does the prince do after the fox tells him a secret?
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C. C
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( ) 30. Why did the father not ask his son not to do this and do that？
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D．Because he didn't want to be much too strict with his son．
A. A
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C. C
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【单选题】
( ) 31. What would someone learn from this passage？
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C．What a good father should do． D．What the self-important is like．
A. A
B. B
C. C
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【单选题】
( ) 32. What may be the proper Chinese for the underlined part in the passage？
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A. A
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【单选题】
( ) 33. Why did Natalie Smith pay for the six cars behind her?
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【单选题】
( ) 34. Judy Foreman copied down the phrase because she ___ .
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【单选题】
( ) 35. Who came up with the phrase according to the passage?
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A. A
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【单选题】
( ) 36. What can we infer from the last paragraph?
A. People should practice random kindness to those in need.
B. People who receive kindness are likely to offer it to others.
C. People should practice random kindness to strangers they meet.
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A. A
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【单选题】
( ) 37.The greatest river for navigation is ___________.
A. the Nile B. the Amazon C. the Mekong D. the Mississippi
A. A
B. B
C. C
D. D
【单选题】
( ) 38. From a dam, people can use the water for ___________.
A. keeping the rivers clean B. only making electricity
C. irrigation and making electricity D. washing clothes
A. A
B. B
C. C
D. D
【单选题】
( ) 39. The water in the river is polluted because of _____________.
A. people's drinking water too much B. people's swimming in the river too much
C. chemicals and other materials D. people's building a dam across a river
A. A
B. B
C. C
D. D
【单选题】
( ) 40. The best title of the passage is ___________.
A. Rivers in Cities B. The importance of Rivers
C. Transportation D. Natural Resources
A. A
B. B
C. C
D. D
