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【简答题】
Decide which of the words given in the box below would best complete the passage if inserted in the corresponding blank. The words can be used ONCE. You cannot 1 how things will go. Sometimes imagination makes things out far worse than they are; yet without imagination not much can be done. Those people who are 2 see many more dangers than perhaps exist; certainly many more will happen; but 3 they must also pray to be given that extra courage to carry this far-reaching imagination. But for everyone, surely, what we 4 in this period — I am 5 myself to the school — surely from this period of ten months this is the lesson: never give in, never give in, never, never, never, never — in nothing, 6 or small, large or petty — never give in except to 7 of honour and good sense. Never yield to force; never yield to the apparently 8 might of the enemy. We stood all alone a year ago, and to many countries it seemed that our account was closed, we were 9 . All this tradition of ours, our songs, our school history, this part of the history of this country, were gone and finished and 10 . A. then B. overwhelming C. convictions D. liquidated E. tell from appearances F . finished G. addressing H. imaginative I. great J. have gone through
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参考答案:
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【判断题】4板坯宽度精度的控制主要在粗轧机。( )
A.
正确
B.
错误
【单选题】不属于 原核细胞界微生物是
A.
霍乱弧菌
B.
HIV 病毒
C.
肺炎支原体
D.
莫氏立克次体
E.
沙眼衣原体
【简答题】4板坯宽度精度的控制主要在 。粗轧机常用的板坯宽度控制方式为 。
【判断题】零件的尺寸公差可以为正.负和零。
A.
正确
B.
错误
【单选题】47关于三相异步电动机运行时噪音大故障的可能原因叙述正确的是 。①轴承损坏或严重缺少润滑脂;②环境温度过高且散热不良;③转轴弯曲变形;④带载下单相运行,且过热保护装置整定值小于额定值。
A.
②③
B.
①②
C.
③④
D.
①③
【单选题】有关酶原激活的概念,正确的是
A.
初分泌的酶原即有酶活性
B.
酶原转变为酶是可逆反应过程
C.
无活性酶原转变为有活性酶的过程是酶原激活
D.
酶原激活是酶原蛋白质变性
【单选题】运输需求的价格弹性值为( )
A.
大于0
B.
小于0
C.
等于0
D.
等于常熟k
【单选题】运输需求的价格弹性值为( )
A.
大于0
B.
小于0
C.
等于0
D.
等于常数k
【多选题】4板坯宽度精度的控制主要在( )。
A.
粗轧机
B.
精轧机
C.
卷取机
D.
立辊系统
【判断题】到 20 世纪 50 年代,随着电子显微镜的应用和细胞超微结构研究的进展,提出了原核与真核的概念,因此把属于原核结构的细菌和具有真核结构的真菌等统归原生生物界显然是不可能的。
A.
正确
B.
错误
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