问题 问答题 简答题

什么叫热工事故信号?

答案

参考答案:

热工信号超限时,即达到报警第一值热工预告信号系统发出声光报警,使运行人员及时采取有效措施,使热工参数恢复正常数值。若运行人员采取措施不当,则热工参数就会继续偏离规定值而达到第二值,当热工参数达到第二值时,信号系统发出报警信号,相应联锁或保护动作,称这时的报警信号叫热工事故信号。

判断题
单项选择题

Valentine’s Day was the time my father chose to show his love for the special people in his life. Over the years I fondly thought (31) him as my "Valentine man".

My first recollection of the magic he could bring to Valentine’s Day came when I was six. That morning at the breakfast table I found a card and a gift-wrapped package at my chair. The card was (32) "Love, Dad" and the gift was a ring with a small piece of red glass to represent my birthstone, a ruby.There is (33) difference between red glass and rubies to a child of six, and I remember wearing that ring with pride that all the cards in the world (34) not surpass.

As I grew older, the gifts gave (35) to heart-shaped boxes filled with my favorite chocolate and always included a (36) card signed "Love,Dad". In those years my thank-you became more of a perfunctory response. The cards seemed less (37) , and I took for granted that the Valentine would always be there. I had (38) my hopes and dreams in receiving cards and gifts from "significant others" and "Love, Dad" just didn’t seem quite enough.His final card remains on my desk today. It’s a (39) of how special fathers ean be and how important it has been to me over the years to know that I had a father who continued a tradition of love with simple acts of understanding and an ability to express happiness over the people in his life.Those things never (40) , nor does the memory of a man who never tried being my Valentine.

36()。

A. usual

B. common

C. strange

D. speecral