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【单选题】
Steamships were first introduced into the United States in 1807, and John Moison built the first steamship in Canada(then called British North America)in 1809. By the 1830s dozens of steam vessels were in use in Canada. They offered the traveler reliable transportation in comfortable facilities--a welcome alternative to stagecoach travel which at the best of times could only be described as wretched. This commitment to dependable river transport became entrenched with the investment of millions of dollars for the improvement of waterways, which included the construction of canals and lock systems. The Lachine and Welland Canals, two of the most important systems, were opened in 1825 and 1829, respectively. By the time that Upper and Lower Canada were united into the Province of Canada in 1841 ,the public debt for canals was more than one hundred dollars per capita, an enormous sum for the time. But it may not seem such a great amount if we consider that improvements allowed steamboats to remain practical for most commercial transport in Canada until the mid-nineteenth century. What is the main purpose of the passage?
A.
To contrast travel by steamship and stagecoach.
B.
To criticize the level of public debt in nineteenth century in Canada.
C.
To describe the introduction of steamships in Canada.
D.
To show how Canada surpassed the United States in transportation improvements.
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【多选题】电压互感器的接线方式主要有( )。
A.
三角形接线
B.
完全星形接线
C.
Yy接法
D.
Vv接法
【多选题】电压互感器(TV)的常见接线方式主要有()
A.
一个单相电压互感器接线
B.
两个单相电压互感器接成V/V形
C.
三个单相电压互感器接成Y0/ Y0形
D.
三个单相电压互感器或一个三相五柱式电压互感器接成 Y0/ Y0/ 形
【简答题】电压互感器有三种接线方式,分别为:()接线,()接线,()接线。
【简答题】电压互感器二次侧不容许短路是因为( )? A二次侧会出现过电压 B二次侧短路会烧毁绕组 C二次侧短路会烧毁仪表 D电压互感器无效
【单选题】关于尿道下裂的治疗,下列哪项是错误的( )
A.
可先行阴茎伸直
B.
矫正阴茎弯曲畸形及尿道成形可一次完成
C.
第一期手术10天后,即可行二期手术
D.
第一期手术后须留置导尿管
E.
第二期手术一般需行尿流改道
【简答题】某公司在黄河厅开会,事前向市场营销部预定了100人的茶歇,可实到开会人数却达250人。会议开始后才意识到问题的严重性,随即紧急向饭店方要求增加茶歇数量。 如果你是负责此次会务的饭店工作人员,谈谈你的工作思路?
【单选题】在欧美国家,一般超过几个小时的会议,都会提供茶歇?
A.
1小时
B.
2小时
C.
3小时
D.
4小时
【单选题】关于尿道下裂的治疗,下列哪项是错误的( )
A.
矫正阴茎弯曲畸形及尿道成形可一次完成
B.
可先行阴茎伸直术
C.
第一期手术10天后,即可行二期手术
D.
第一期手术后须留置导尿管
E.
第二期手术需行尿流改道
【简答题】电压互感器有几种接线方式?
【判断题】电压互感器二次侧电压低,因而二次侧可短接,但不得开路。()
A.
正确
B.
错误
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