轴承与电机装配不当引起振动与噪声的主要因素是() A.轴承径向游隙的大小 B.端盖和

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问题:

轴承与电机装配不当引起振动与噪声的主要因素是()

A.轴承径向游隙的大小

B.端盖和机座的钢度

C.轴向窜动

D.轴承装配

考点:电机装配工考试电机装配工考试题库
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In the last couple of years, there has been a craze about time­traveling TV series in China.This year, it seems like the South Korean drama writers have fallen in a deep, neverending love with the time­travel trend.

Rooftop Prince

A prince from the Joseon era (18th century), Lee Gak is catapulted 300 years forward into the future in Seoul 2012 with his entourage(随从) when he tries to investigate the suspicious circumstances which surround the death of the woman he loves.In the present, he finds a young woman who looks exactly like his beloved crown princess.

Queen In­hyun's Man

The drama, set during the Joseon era, features the hero Kim Boong­do as he tries to restore the exiled Queen In­hyun.It is in this time period he is given the time­traveling power that transports him to the future world where he makes friends with an actress playing the role of Queen In­hyun for a drama in her time.

Dr Jin

Jin Hyuk is a genius neurosurgeon.Through a mysterious power, Jin finds himself transported back in time 150 years.He begins treating people there, but the lack of equipment and medical knowledge of the period forces him to seek new ways to aid the sick.Through this challenging process, Jin eventually becomes a genuine doctor.

Operation Proposal

Kang Baek­ho realizes that he falls in love with his best friend, Ham Yi­seul, on the day of her wedding to another man.He travels back in time to various events of their lives hoping to change the outcome of their relationship.Will Kang be able to change the course of their future?

小题1:Which of the following words can replace “catapulted” in Paragraph 2?

A.Captured.

B.Transported.

C.Traveled.

D.Deserted.小题2:What do the three TV series have in common?

A.They are all about love.

B.They all describe what happened in ancient times.

C.They are all based on true stories.

D.They all feature time­travel.小题3:If you are interested in prince and princess story, which will you turn into?

A.Rooftop Prince.

B.Queen In­hyun's Man.

C.Dr Jin.

D.Operation Proposal.

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男性,65岁。3年来劳累后心悸、气短、纳差、浮肿,2周来上述症状加重。检查:血压130/65mmHg,心脏增大,心尖区可闻及舒张期隆隆样杂音,心率130次/分,心率快慢不齐,心音强弱不等,颈静脉怒张,双肺底闻及湿性罗音,肝肋下3cm,脾未及,下肢浮肿(+),脉率80次/分。

该患者采取的进一步治疗措施,哪一项最合适()

A.利尿剂减轻浮肿症状与心脏前负荷

B.用甘露醇利尿

C.白蛋白补充利尿效果

D.扩张小动脉的血管扩张剂,减轻心脏后负荷

E.洋地黄类强心治疗

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可以判断油脂皂化反应基本完成的现象是()。

A.反应液使红色石蕊试纸变蓝色

B.反应液使蓝色石蕊试纸变红色

C.反应后,静置,反应液分为两层

D.反应后,静置,反应液不分层

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皇太极

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连铸坯的结晶结构从外到内分三层:激冷层、()和()。

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