用与丝绸摩擦过的玻璃杯A靠近轻质小球B,发现B被排斥,则B带______电.如图

题型:填空题

问题:

用与丝绸摩擦过的玻璃杯A靠近轻质小球B,发现B被排斥,则B带______电.如图所示,根据通电螺丝管线圈中的电流方向,可判断通电螺丝管的左端为______极.

考点:电荷间的相互作用
题型:填空题

There is _____  "u" and _____ "r" in the word "umbrella".[ ]

A. a, a            

B. a, an          

C. an, a            

D. an, an

题型:填空题

快速旅客列车在运行途中发生空气弹簧故障时,运行速度不得超过()

A.80km/h

B.100km/h

C.120km/h

D.60km/h

题型:填空题

在流速表达式中U=VS/A,A是指与流体流动方向垂直的管道截面积。

题型:填空题

对采用各种生物识别技术装置(如指纹、掌形、视网膜、声控及其复合技术)的出入口控制系统的调试,应按自己掌握的技术及产品说明书进行。

题型:填空题

The United States is usually given credit for creating and developing the musical comedy as it is known today. The first musical shows were based (1) everyday American life and the (2) development of the form took place in the United States for more than half a century. (3) the early 1970s, (4) , the London theater has (5) the Broadway stage.

The Black Crook, which opened at Niblo’s Garden in New York City on Sept. 12, 1866, is usually (6) as the inspiration for musical comedy. A troupe of French ballet dancers (7) to be stranded in New York without work (8) a fire damaged the theater (9) they had been booked. In order to keep a (10) to them, the theater producer put the dancers into a melodrama written by Charles M. Barres.

The first stage production that was (11) a musical comedy was a show that was (12) from the Prince of Wales Theater to the Gaiety Theater in London in 1892. Staged by George Edwards, the show called In Town featured a chorus line of Gaiety Girls. The (13) year A Gaiety Girl was equally successful, and a (14) of the show played in New York in the same year. When it was (15) in newspapers, it was designated a musical comedy and regarded as a new (16) of entertainment.

It did not take the form long to (17) in the United States. Almost (18) one of the most renowned talents of the American stage went to work on his own musicals. The singer-dancer George M. Cohan staged Little Johnny Jones in 1904. Cohan, (19) own life story was made into the musical George M (1968), also wrote the books, words, and (20) for Forty-five Minutes from Broadway ( 1906 ), The Little Millionaire ( 1911 ), The Song and Dance Man ( 1923 ), and American Born (1925).

11()

A.thought

B. considered

C. mentioned

D.meant

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