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【简答题】
作用在质量为1 kg的物体上的 ,式中t的单位是s,为了使这力的功为200 J,该在这物体上作用距离为 m ,设物体初速为0, 此时,物体的速度为 m/S.
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举一反三
【简答题】I want to get better educatio n first instead of ________ (find) a job .
【单选题】提示高热患者退热期可能发生虚脱的表现是
A.
皮肤苍白、寒战，出汗
B.
脉速、面部潮红，无汗
C.
缓脉、呼吸渐慢，无汗
D.
脉细速、四肢厥冷、出汗
E.
头晕，恶心，无汗
【单选题】有关耐药性的描述，不正确的是( )
A.
细菌的耐药性问题越来越严重
B.
细菌的耐药性是由于使用了抗生素而产生的
C.
细菌的多重耐药性是由于R质粒的传递
D.
R质粒由RTF’和r决定子两部分组成
E.
合理使用抗生素是减少耐药性的重要措施
【单选题】提示高热患者退热期可能发生虚脱的表现是
A.
皮肤苍白，寒战，出汗
B.
头晕，恶心，无汗
C.
脉搏、呼吸减慢，无汗
D.
脉细速，四肢湿冷，出汗
E.
脉速，面部潮红，无汗
【单选题】This text is likely to be selected from a book of _________.
A.
medicine
B.
education
C.
geography
D.
history
【单选题】______ somewhat ambitious as well as naive, they decided to extend their graduate education by attending a prestigious university in New York City.
A.
To be
B.
Were
C.
Being
D.
Were to
【单选题】The Josephson Institute specializes in studying ______.
A.
the importance of online education
B.
the moral principles among the youth
C.
employment of college graduates
D.
college students' learning habits
【单选题】As mentioned in the passage, Rod Paige was certainly __
A.
a secretary in charge of education in the NCLB program
B.
a secretary in charge of TV Education for American children
C.
one of the many men interviewed on radio in 2004
D.
the man in charge of the Education Ministry of the United States
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