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【简答题】
Why do many students calculate they can't major in English or history? 2. Why does the author say that a college education is more and more seen as a means for economic betterment rather than a means for human betterment? 3.How do you understand “These days, labs are more vivid and compelling than libraries”(Para.3) ? 4. Why does the author say that the inner aspect of our being has captured our imagination from the very beginning? 5. According to the author, what are the advantages of studying the humanities? 6. How do you understand the statement that we a reliable to miss many opportunities if we study the humanities alone? 7. What are “well-rounded human beings” (Para.10) according to the author? 8. Why does the author say “Who know show famous YOU might become!” at the end of the text?
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【单选题】专用人行桥梁的人群荷载标准值为:
A.
2.5 kN/m 2
B.
3.0 kN/m 2
C.
3.5 kN/m 2
D.
4.0 kN/m 2
【简答题】普通单向阀由阀体、 和 等组成。阀芯有球阀和锥阀两种,连接方式有管式和 两种。普通单向阀的弹簧很软,开启压力为 Mpa ~ Mpa。
【单选题】专用人行桥梁的人群荷载标准值为() kN/m 2
A.
2.5
B.
3.0
C.
3.5
D.
4.0
【单选题】专用人行桥梁,人群荷载标准值为( )。
A.
3.5kN/m 2
B.
3.0kN/m 2
C.
2.5kN/m 2
D.
1.15kN/m 2
【判断题】执行器气开/气关型式可通过不同的组合方式来实现。由于执行机构按阀杆的位移方向有正反两种作用方式,阀亦有正装和反装两种,所以实现气动执行器的气开/气关型式有四种组合形式。
A.
正确
B.
错误
【简答题】方向阀有单向阀和()阀两种。
【单选题】下列哪项不属于突发公共卫生事件的特征()
A.
突发性
B.
少发性
C.
多样性
D.
复杂性
E.
严重性
【判断题】换向阀是具有两种以上流动形式和两个以上油口的方向控制阀。是实现液压油流的沟通、切断和换向,以及压力卸载和顺序动作控制的阀门。 ( )
A.
正确
B.
错误
【单选题】下列哪项不属于突发公共卫生事件的特点( )
A.
.突发性
B.
.普通性
C.
.非常规性
D.
.常规性
E.
.一般不具备事物发生前的征兆
【简答题】专用人行桥梁,人群荷载标准值为 KN/m 2 。
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