在反应堆检修和换料时，一回路降温降压到多少度才能停最后一台冷却剂泵？-我要搜题网

[单项选择] The tanker lay in the bay for four days, a few hundred meters from the shore. In this tideless water she lay as still and secure as if fastened to a wall. In a way, she was, for the sandy bottom held her in its grip. Twice the harbor master’’s boat went out to her; the second time it brought off a number of the crew. It never occurred to the watchers on shore that the ship was in danger, she looked so calm and seaworthy. From time to time there was activity on board: when a land wind rose in the evenings, the tanker’’s engines came to life. Then the vessel shook herself and strained fiercely, but none of it did her any good. She just stayed where she was in the bay. The July sun blazed down on her flat decks. Occasionally a seaman, stripped to the waist, came out on to the deck with the movements of someone performing a complicated dance, stepping lightly, never resting on that burning metal. Once or twice he kept close to the ship’’s rail, with an arm raised against the sunli
A. she was struck by lightning
B. two seamen were working
C. she was unloading her oil
D. the fog began to clear up

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[简答题]简述印刷对橡皮布的质量要求。

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[判断题]依照《安全生产法》的规定,从业人员有权了解作业场所和工作岗位存在的危险因素,生产经营单位应当如实告之,不得隐瞒和欺骗。
A.正确
B.错误

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[多项选择]道岔护轨轮缘宽度为（），容许误差为-1-+3mm。
A. 42
B. 44
C. -1-+3
D. -7

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[单项选择]( )是指针对某设备的设计任务建立质量目标，规定质量要求和安排应开展的各种活动。
A. 质量策划
B. 设计策划
C. 设备策划
D. 过程策划

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[单选题]全面建成小康社会，加快推进社会主义现代化，实现中华民族伟大复兴，必须坚定不移（）。
A.坚持科学发展观
B.走中国特色社会主义道路
C.坚持改革开放
D.坚持独立自主

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[单项选择]

About fifty years ago, plant physiologists set out to grow roots by themselves in solutions in laboratory flasks. The scientists found that the nutrition of isolated roots was quite simple. They required sugar and the usual minerals and vitamins. However, they did not require organic nitrogen compounds. These roots got along fine on mineral inorganic nitrogen. Roots are capable of making their own proteins and other organic compounds. These activities by roots require energy, of course. The process of respiration uses sugar to make the high energy compound ATP, which drives the biochemical reactions. Respiration also requires oxygen. Highly active roots require a good deal of oxygen. The study of isolated roots has provided an understanding of the relationship between shoots and roots in intact plants. The leaves of the shoots provide the roots with sugar and vitamins, and the roots provide the shoots with water and minerals. In addition, roots can provide the shoots with organic
A. unavoidable
B. predictable
C. necessary
D. successful

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[单选题]半导体的电导率随温度升高而（）。
A.不变化
B.呈线性减小
C.按一定规律增大
D.按指数规律减小

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[判断题]车辆监控显示器上车门显示粉红色代表紧急解锁触发故障。
A.正确
B.错误

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[单选题]BB014检验普通级环氧煤沥青防腐层的检漏电压为( )。
A.1500V
B.2000V
C.2500V
D.3000V

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[单选题]FIM评定项目除哪项以外
A.自理能力
B.括约肌控制
C.心理障碍
D.运动、交流
E.社会认知

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[多选题]依据物质燃烧特性，火灾可划分为（）。
A.A类
B.B类
C.C类
D.D类
E.E类
F.F类

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[多选题]需要踩踏座席时，( )。
A.带鞋套
B.使用垫布
C.光脚
D.穿鞋