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1、2021年全国硕士研究生入学统一考试英语试题及参考答案.doc 一 次 ， 他 在 核 实 数 据 时 ， 认 为 部 分 数 据 需 要 重 新 测 量 ， 但 项 目 部 的 车 都 被 派 出 去 了 。 一 次 ， 他 在 核 实 数 据 时 ， 认 为 部 分 数 据 需 要 重 新 测 量 ， 但 项 目 部 的 车 都 被 派 出 去 了 。 b e lim ite d to n o m o re th a n 2 d a y s o f w o rk , m a te ria l d e p o site d in sp e cia l in su la te d co n t
2、a in e rs, m a te ria l h a n d lin g to g e n tly a n d m a k e u se o f th e rm a l in su la tio n m a te ria l in w in d p ro o f, w a te rp ro o f, m o istu re -p ro o f m e a su re . 6 .2 th e rm a l d e sig n o p tim iza tio n fo r h ig h -te m p e ra tu re sp e cia l th e rm a l in su la tio
3、n fo r p ip in g su p p o rt a n d h a n g e r d e sig n , re d u ce d h e a t d issip a tio n o f th e h a n g e rs, e n su re th a t th e w a ll d o e s n o t o v e rh e a t. S m a ll-d ia m e te r p ip in g , th e rm a l in stru m e n t la y o u t a n d p o sitio n in g o f su p p o rt a n d h a
4、n g e r d e sig n ta k e fu lly in to a cco u n t th e e x p a n sio n sp a ce a n d in su la tio n th ick n e ss. La rg e -d ia m e te r p ip e s a fte r h e a t p re se rv a tio n p la ste rin g co n stru ctio n o f v a lv e s, tu rb in e , ch e ck in g sm o o th su rfa ce , h ig h te m p e ra tu
5、re p o w d e r p a in t fu lly d ry a fte r. P ro te ctiv e co v e rin g s fo r e le ctric e q u ip m e n t in su la tio n b o a rd s d e sig n e d w ith p re ssu re p la te , w h e n o rd e rin g a cco rd in g to th e in sta lla tio n d ia g ra m , m o d e l sp e cifica tio n s p u b lish in g o rd
6、 e r, e n su re w h e n in sta llin g co rn e rs n e a t, u n ifo rm a p p e a ra n ce , re d u ce th e a m o u n t o f o n -site m a ch in in g . B e fo re v a lv e s, fla n g e in su la tio n sh e ll co n stru ctio n , b e su re to m a k e a u n ifie d m o d e l, a ll v a lv e s, fla n g e s, in s
7、u la tio n co v e r u n ifie d , tid y a n d b e a u tifu l. W h e n fo u r p a rts su ch a s p ip e s, b o ile r in su la tio n , m u st d o first a rticle in sp e ctio n , p ro o f o f d e sig n a n d co n stru ctio n m e th o d s, te ch n o lo g y ca n m e e t th e te ch n o lo g ica l re q u ire
8、 m e n ts, b e fo re e x te n siv e co n stru ctio n . B o ile r ste e l b e a m s, d o o r o p e n in g b o x e s d e sig n e d w ith in su la tio n g a sk e ts, fla n g e ca n n o t b e o b liq u e , e v e n fa ste n e d . B a ck in to th e slo p e o f th e tu b in g d u rin g in sta lla tio n p a
9、 y a tte n tio n to th e p ip in g , o il sta tio n is a lo w p o in t. R e fu e lin g m u st b e co n tro lle d w h e n ca stin g m a te ria l p a rts, se le ct lo w th e rm a l co n d u ctiv ity m a te ria ls a s fa r a s p o ssib le , e n su re th a t th e se p a rts d o n o t o v e rh e a t. 6 .
10、3 q u a lity d e fe cts o f in su la tio n te ch n o lo g y m a n a g e m e n t o p tim iza tio n o f co n stru ctio n p ro ce ss a n d d e v e lo p a re a so n a b le d u ra tio n , re g io n a l tra n sfe r o f strictly 2021 年全国硕士研究生入学统一考试英语试题 Section I Use of English Directions: Read the followin
11、g text. Choose the best word(s) for each numbered blank and mark A, B, C or D on ANSWER SHEET 1. (10 points) In 1924 AmericanNational Research Council sent to engineers to supervise a series of industrial experiments at a large telephone-parts factory called the Hawthore Plant near Chicago.It hoped
12、they would learn how stop-floor lignting_1_workers productivity. Instead, the studies ended _2_giving their name to the Hawthorne effect, the extremely influential idea that the very_3_to being experimented upon changed subjects behavior. The idea arose because of the _4_behavior of the women in the
13、 Hawthorne plant.According to _5_of the experments, their hourly output rose when lighting was increased, but also when it was dimmed. It did not _6_what was done in the experiment; _7_something was changed ,productivity rose. A(n)_8_that they were being experimented upon seemed to be _9_to alter wo
14、rkers behavior _10_itself. After several decades, the same data were _11_ to econometric the analysis. The Hawthorne experiments have another surprise in store: _12 _the descriptions on record, no systematic _13_ was found that levels of reproductivity were related to changes in lighting. It turns o
15、ut that particular way of conducting the experiments may have led to_ 14_ interpretation of what happed._ 15_ , lighting was always changed on a Sunday .When work started again on Monday, output _16_ rose compared with the previous Saturday and_ 17 _to rise for the next couple of days._ 18_ a compar
16、ison with data for weeks when there was no experimentation showed that output always went up on Monday. Workers_ 19_ to be diligent for the first few days of the weeking week in any case , before _20 _a plateau and then slackening off. This suggests that the alleged Hawthorne effect is hard to pin down. 1. A affected B achieved C extracted D restored 2. A at Bup C with D o
