[多选题]哪些情况列车不准退行？
A.按自动闭塞法运行时（列车调度员或后方站车站值班员确认该列车至后方站间无列车，并准许时除外）
B.在降雾、暴风雨雪及其他不良条件下，难以辨认信号时
C.一切电话中断后发出的列车（持有附件3通知书2的列车除外）
D.一切电话中断后发出的列车（持有附件3通知书之1的列车除外）

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[单选题]围绕防控重点，构建（）风险防控体系。
A.一表一库
B.五级五控
C.现场管控
D.方案编审

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[判断题]大曲培养后曲心有淀粉现象叫生心。 ( )
A.正确
B.错误

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[单选题]车门驱动电机的更换周期一般为[]年。
A.5
B.10
C.15
D.20

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[单选题]SS4改电力机车车钩水平中心线距轨面高度为( )。
A. 880±10 mm
B. 890±10 mm
C. 880±10 m
D. 890±10 m

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[单项选择]学生健康成长的关键是他们自己要形成健康成长的意识、理念，学会（）前进的本领。
A. 尝试实践
B. 主动探索
C. 实践探索
D. 健康成长

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[单项选择]Every profession or trade, every art, and every science has its technical vocabulary, the function of which is partly to designate things or processes which have no names in ordinary English, and partly to secure greater exactness in nomenclature. Such special dialects, or jargons, are necessary in technical discussion of any kind. Thousands of these technical terms are very properly included in every large dictionary, yet, as a whole, they are rather on the outskirts of the English language than actually within its borders.
Different occupations, however, differ widely in the character of their special vocabularies. In trades and handicrafts, and other vocations, like farming and fishery, that have occupied great numbers of men from remote times, the technical vocabulary, is very old. Hence, though highly technical in many particulars, these vocabularies are mole familiar in sound, and more generally understood, than most other technicalities. The special dialects of law, medicin
A. farming
B. botany
C. government
D. sports

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[单选题]在项目组合管理中，在主旨范围内为项目分配资源。组织级项目管理中的资源平衡过程主要是：（）。的说法是正确的。
A.首先为单个项目做资源平衡，再在项目间进行资源平衡
B.针对所有项目的需求对组织内的资源进行统一的资源平衡
C.只在单一项目内进行资源平衡
D.主要针对资源短缺的项目进行资源优化与平衡

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[单项选择] People have been painting pictures for at least 30,000 years. The earliest pictures were painted by people who hunted animals. They used to paint pictures of the animals they wanted to catch and kill. Pictures of this kind have been found on the walls of caves in France and Spain. No one knows why they were painted there. Perhaps the painters thought that their pictures would help them to catch these animals. Or perhaps human beings have always wanted to tell stories in pictures. About 5,000 years ago the Egyptians and other people in the Near East began to use pictures as a kind of writing. They drew simple pictures or signs to represent things and ideas, and also to represent the sounds of their language. The signs these people used became a kind of alphabet. The Egyptians used to record information and to tell stories by putting picture-writing and pictures together. When an important person died, scenes and stories from his life were painted and carved on the walls of
A. the hunters wanted to see the pictures.
B. the painters were animal lovers.
C. the painters wanted to show imagination.
D. the pictures were thought to be helpful.

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[单项选择]下列工作内容中属于地质生产技术员工作范畴的是（）。
A. 钻时收集、测井解释
B. 取心层位的卡取、完钻层位把关
C. 钻井液性能资料的收集
D. 荧光湿照

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[单项选择]低水头、大流量水电站，通常选用（　）水轮机。
A. 双击式
B. 贯流式
C. 斜流式
D. 混流式

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[单项选择]消费者权益的管理权属于国家各级（）。
A. 行政执法机关和行业主管部门
B. 消费者协会
C. 人民法院
D. 仲裁机关

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[单项选择]指在与声束轴线垂直的平面上，在探头长轴方向的分辨力（）
A. 轴向分辨力
B. 侧向分辨力
C. 横向分辨力
D. 热效应
E. 空化效应

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[单选题]敷设电缆时，接头处的搭接长度一般为（　　）m左右。
A.0.3
B.0.5
C.1
D.2

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[填空题]鼓风机前吸力 (___)