题目内容 (请给出正确答案)
提问人:网友13***556 发布时间:2022年5月1日 22:23
[单选题]

下列液压控制阀中由两种阀组合而成的是          

A . 调速阀B . 平衡阀C . 液控单向阀D . 调速阀+平衡阀

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下列液压控制阀中由两种阀组合而成的是

具有氧化酶活性的是A.免疫球蛋白B.肌红蛋白C..脂蛋白D.铜蓝蛋白###S
A.免疫球蛋白
B.肌红蛋白
C..脂蛋白
D.铜蓝蛋白
E.清(白)蛋白
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Why crime has risen so much further and faster in Britain than in any other rich country over the pa...The author suggests in the 1st paragraph that
A.the British poverty has exceeded that of the U. S.
B. the U. S. divorce rate is less fearful than that of Britain.
C.the British population is mostly protected by government.
D. the number of criminals imprisoned in the U. S. is great.
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长期制动后对神经系统功能活动的影响不正确的是()。
A.情感障碍
B.感觉异常
C.痛阈下降
D.认知能力提高
E.严重者有异常运动觉
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授信工作尽职评价只能通过现场工作进行。
A.对 B.错
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公司设立与公司登记(华师2004年研)
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基础设施的自然垄断性具体表现在基础设施()
A.服务的地区依附性
B.规模经济性
C.具有大量的沉淀资本
D.依靠财政补偿
E.企业规模大
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门座起重机属于()起重机。
A.固定式
B.移动式
C.浮式
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化学成分不同即为不同矿物种;化学成分相同,晶体结构不同,亦为不同矿物种。
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在日常工作中,通过调节窗宽窗位来观察图像,要提高观察范围内组织的对比分辨率首先应采取()
A.适当提高窗位
B.适当增大窗宽
C.适当降低窗位
D.适当减小窗宽
E.以上均不是
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以下是“智慧城市”示范工程的是()。
A.上海世博园
B.无锡“感知中国”中心
C.杭州图书馆新馆
D.以上都是
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给出下面main()函数的执行结果:
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影响儿童身心发展的因素有()
A.生物因素
B.家庭因素
C.社会因素
D.学校教育因素
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Of all the areas of learning the most important is the development of attitudes. (1) reactions as ...A. processes B. programs C. plans D. products
Another reason is that pupils often delve somewhat deeply into a subject in school that has only been touched upon at home or has possibly never (10) to them before. To a child who had (11) acquired little knowledge of Mexico, his teacher’s method of handling such a unit would greatly affect his attitude toward Mexicans.
The media through (12) the teacher can develop wholesome attitudes are (13) . Social studies, science matters of health and safety, the very (14) of the classroom, these are a few of the (15) fields for the instruction of proper emotional reactions.
However, when children come to school with (16) attitudes, it is unwise for the teacher to attempt to change their feelings by cajoling (以甜言蜜语哄骗) or (17) them. She can achieve the proper effect by helping them (18) constructive experiences.
To illustrate, first-grade pupils afraid of policemen will probably (19) their attitudes after a classroom chat with the neighborhood (20) in which he explains how he protects them.
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空调涡旋式压缩机比往复式压缩机节电()以上。
A . A.40%;
B . B.20;
C . C.30%;
D . D.25%
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以下填料形状最有利于塑料成型加工的是()。
A.薄片状B.纤维状C.块状D.圆球状
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