题目

磁电式电流表中通以相同电流时，指针偏转角度越大，表示电流表灵敏度越高，若其余条件都相同，则灵敏度高的电流表具有(    )    A．比较小的通电线圈的横截面积    B．劲度系数比较大的两个螺旋弹簧    C．比较少的通电线圈匝数          D．比较强的辐向分布的磁场 答案：D 解析:电流表中指针偏转角度与线圈匝数n、磁感应强度B、线圈面积S和与两个螺旋弹簧劲度系数的关系为， 所以n、B、S越大，灵敏度越高；越大，灵敏度越低．23、Facebook is a social networking website that connects people with friends and others who work，study and live around them．People use Facebook to keep up with friends online，start a blog，join or start a discussion group or even watch new music videos or listen to favorite songs．Here is Maggie Yost's Facebook． Maggie Yost           on Monday Wall    Info    Photos        Boxes Basie Information   _________________ Networks：       Hopewell-Loudon Local'll Sex：            Female Birthday：        May 28 Relationship Status：Single Looking For：      Friendship Personal Information  _________________ Interests：         camping with friends，football，baseball，basketball Favorite Music：  rap，country，hip-hop，rock Favorite TV Shows：One Tree Hill，Girls Next Door， America’s Best Dance Crew Favorite Movies： The Notebook，John Tucker Must Die，Step up About Me：     like meeting and talking with other people Contact Information _________________ E-mail         Volleygirl2624@gmail.com Mobile：      419-934-0752 Education and work_________________ College：     Hopewell-Loudon Local'll View（看）Photos of Maggie（840） View Videos of Maggie（1） Send Maggie a Message Information Networks： Hopewell-Loudon Local'll 1．From the passage，we know that people use Facebook to _________． A．sell books                                                  B．make videos C．listen to music                                            D．write computer programs 2．According to Basic Information，Maggie Yost wants to use Facebook to _________． A．recommend rap                                                 B．make some friends C．play basketball                                            D．watch some movies 3．Girls Next Door is one of Maggie Yost's favorite _________． A．TV shows         B．movies                    C．songs             D．games 4．From Maggie Yost's Personal Information，we know she is _________． A．patient             B．inactive．          C．humorous          D．outgoing 5．Which of the following talks about Maggie Yost? A．Maggie's mobile phone number is 419--934--0572． B．Maggie can keep up with her friends online． C．Maggie works in Hopewell-Loudon Company， D．Maggie's e-mail address is Maggie2624@gmail.com． 评卷人 得分 七、阅读填空 （每空？ 分，共？ 分）