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【单选题】
On the afternoon of April 19th, 1587, Sir Francis Dr. Ake led his convoy of 31 ships into the port of Cadiz, (1)_____ the Spanish navy was being prepared to (2)_____ England. The Spanish were (3)_____ completely by surprise, and Dr. Ake's men quickly looted, sank or burnt every ship in sight. After clearing the harbour of stores and (4)_____ off a Spanish attack, Dr, eke and his ships (5)_____ without the loss of a single man. Back in England, Dr. aka became a national hero, and his daring attack became known as the 'singeing of the King of Spain's beard'. As well as (6)_____ back the Spanish plan to invade England by several months, Dr. Ake's daring attack (7)_____ the success of a popular new drink. For among the stores that he (8)_____ from Cadiz were 2,900 large barrels of sack, a wine made in the Jerez region of Spain, and the (9)_____ of today's sherry. The wine makers of Jerez looked for overseas markets, and sack started to take off in England. In 1587, the celebratory drinking of the sack brought back from Cadiz by Dr. Ake gave it a further (10)_____ and made it hugely fashionable, (11)_____ its Spanish origin. For (12)_____ chemical reasons, sack was an unusually long-lasting and (13)_____ wine. This made it ideal for taking on long sea voyages, (14)_____ which alcoholic drinks acted as a vital social lubricant that (15)_____ the hardship of spending weeks packed into a (16)_____ ship. Columbus took sack with him to the new world in the 1490s, making it the first wine to be (17)_____ into the Americas. In 1604, sack was (18)_____ official recognition of (19)_____ when James I (20)_____ an ordinance limiting its consumption at court. By this time sack was popularly known as sherris-sack (sherris being a corruption of Jerez), which eventually became the modern word sherry.
A.
where
B.
when
C.
as
D.
which
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【判断题】对于开式齿轮传动,其失效形式主要是齿面磨损和轮齿折断。
A.
正确
B.
错误
【单选题】病人心悸、头部搏动感4个月。查体:心尖搏动向左下移位,并呈抬举性搏动,有水冲脉及毛细血管搏动征,心界呈靴形,主动脉瓣第二听诊区闻及叹气样、递减型、舒张期杂音,最可能是
A.
二尖瓣狭窄
B.
二尖瓣关闭
C.
主动脉瓣狭窄
D.
主动脉瓣关闭不全
E.
室间隔缺损
【单选题】对于开式齿轮传动,()是主要的失效形式
A.
轮齿折断
B.
齿面点蚀
C.
齿面磨损
D.
齿面胶合
【单选题】对于开式齿轮传动
A.
按接触疲劳强度设计齿轮尺寸,再校核其弯曲疲劳强度
B.
按弯曲疲劳强度设计齿轮尺寸,再校核其接触疲劳强度
C.
只需按接触疲劳强度设计
D.
只需按弯曲疲劳强度设计
【简答题】句型转换。 1. He won't go with us because he is very busy .  (对划线部分提问) 2. My room is as big as Millie's.   (改为同义句) 3. Tommy and Tony were reading the guidebook.  (改为一般疑问句) 4. There won't be any elephants. ...
【简答题】根据 简单清晰的原则,原理图采用 的形式绘制。
【简答题】对于开式齿轮传动,在工程设计中,一般()。 A.按接触强度设计齿轮尺寸,再校核弯曲强度 B按弯曲强度设计齿轮尺寸,再校核接触强度 C.只需按接触强度设计 D.只需按弯曲强度设计
【简答题】根据简单清晰的原则,电气原理图采用_________的形式绘制,它包括所有电气元件的______和接线端点,但并不按照电器元件的______来绘制,也不反映电器元件的大小。
【判断题】电气原理图应根据简单、清晰的原则,采用电器元器件展开形式来绘制。
A.
正确
B.
错误
【单选题】对于开式齿轮传动,()是开式齿轮传动的主要失效形式。
A.
齿面胶合
B.
齿面磨损
C.
轮齿折断
D.
轮齿点蚀
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