在各种天体之中，最基本的是 [ ] A、星云和恒星 B、流星和彗星 C、行星和卫

A little boy invited his mother to attend his elementary school’s first teacher-parent meeting. To the little boy’s (31) ________________(happy), she said she would go. This would be the first time that his classmates and teacher met his mother and he was embarrassed by her (32) ________________ (appear). Although she was a beautiful woman, there was a severe scar (33) _____________covered nearly the whole right side of her face. The boy never wanted to talk about why or how she got the scar.

At the meeting, the people (34) _______________ (impress) by the kindness and natural beauty of his mother though she had a scar on her face, but the little boy was still embarrassed and (35) _______________ (hide) himself from everyone. He did, however, get within earshot of a conversation (36) _______________ his mother and his teacher, and heard them speaking.

‘‘How did you get the scar on your face? ’’ The teacher asked.

The mother replied, ‘‘When my son was a baby, he was in a room that caught on fire. Everyone was too afraid to go in (37) _______________the fire was out of control, so I went in. As I was rushing toward his bed, I saw a beam coming down and I placed myself over him trying to protect him. I was knocked unconscious but (38) _______________ (fortunate), a fireman came in and saved both of us.’’ She touched the burned side of her face. ‘‘This scar will be on my face for ever, but to this day, I have never regretted doing (39) _______________I did.’’

At this point, the little boy came out (40) _______________(run) towards his mother with tears in his eyes. He hugged her and felt a great sense of the sacrifice that his mother had made for him. He held her hand tightly for the rest of the day.

交接和预防性试验常用的测试仪器和仪表，多数是携带型，准确度比较高，一般为（）级。

A.0.5

B.1.5

C.2.5

以下关于绩效考评的特点描述不正确的是（）。

A.绩效考评必须定期进行

B.绩效考评是一个过程，不是简单的行为

C.绩效考评的出发点和终点都是企业整体绩效

D.绩效考评与企业的发展战略、组织构架和人力资源管理息息相关

除防喘活门SCU和燃调FCU外以下哪个部件的余油管有用于检查渗漏的堵塞（）

A.负载压缩机

B.可调导向叶片作动筒IGV

C.燃烧室

婚俗中的“闹洞房”何时有之？是什么意思？