问题 问答题 简答题

试述抛八字锚的方法。

答案

参考答案:

顶风流抛法:操船顶风或流或风流合成方向抛下左锚,松出锚链至一定长度(两节左右)后即转向驶往另一锚位,抛下右锚,同时松出两锚链,船在风流的作用下后退至适当位置,待断定锚已抓底时,再调整两锚链至预定长度。

横风流抛法:在横风中(风压大于流压)先抛上风锚,边松出锚链边动车前进到约50米距离处停车,稍有退速时抛下下风锚,随之松出锚链,当船转向顶风或顶流后,再调整两链至所需长度,两链夹角以30°~60°为好。

一面绞锚,一面倒车,利用两者合力脱浅。

完形填空

It was an early morning in summer. In the streets, sleepy-eyed people were moving quickly, heading towards their  36 .This was the beginning of another  37  day in New York City.   38  this day was to be different.

Waiting  39 the crowded streets, on top of a  40 110 stories high, was Philippe Pettit.This daring Frenchman was about to  41 a tightrope(绷索)between the two towers of the World Trade Center.

Philippe took his first  42  with great care.The wire held. Now he was 43 he could do it.  44 only a balancing Polar, Philippe walked his way across, a  45 of 131 feet.

Soon the rush-hour  46 began to notice. What a   47  !There, 1350 feet above the street, a 48 figure was walking on air.

Philippe made seven  49 , back and forth(来回).He wasn't satisfied with just  50  .At times,he would turn,sit down,and  51 go on his knees.Once,he had the astonishing  52  to lie down on the thin thread. And thousands of  53  watchers stared with their hearts beating fast.

After the forty-five-minute  54 ,Philippe was taken to the police station. He was asked  55  he did it.Philippe shrugged(耸肩)and said,“When I see two tall buildings, I walk.”

36.A. homes                 B. jobs                    C.buses                          D.offices

37.A.working               B.hot                      C. ordinary                   D. same

38.A.And                   B.So                                   C.But                           D.Thus

39.A.for                       B.in                             C.by                               D.above

40.A.roof                            B.position                     C.wall                          D.building

41.A.throw                   B.walk                         C.climb                        D.fix

42.A.act                    B.landing                        C.step                          D.trip

43.A.sure                            B.uncertain                   C.glad                          D.nervous

44.A.Through               B.Against                     C.With                         D.On

45.A.distance                B.height                       C.space                        D.rope

46.A.streets                  B.crowds                  C.passengers                 D.city

47.A.height                  B.pleasure                    C.wonder                        D.danger

48.A.great                    B.strange                  C.public                       D.tiny

49.A.experiments     B.circles                       C.trips                  D.movements

50.A.walking           B.staying                  C.acting                       D.showing

51.A.almost                  B.even                         C.often                         D.rather

52.A.spirit                    B.result                        C.strength                     D.courage

53.A.patient                  B.terrified                    C.pleased              D.enjoyable

54.A.show                    B.trick                         C.try                            D.program

55.A.how                            B.why                          C.whether                     D.when

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