【简答题】A.cloth B.paper C.plastic D.synthetic
【单选题】From the first paragraph we know that ______.
A.
the first synthetic rubber was produced by Charles Goodyear
B.
if it had not been for a traffic accident, we would not have had synthetic rubber
C.
more need for rubber helped the development of synthetic rubber
D.
the first synthetic rubber came into being totally unexpectedly
【单选题】已知终值为500,年利率10%,总期数为5的情况下,企业在第2年期初偿还的本金数,其函数表达式为:( )
【简答题】已知终值为500,年利率10%,总期数为5的情况下,企业在第2年期末偿还的本金数,其函数表达式为:( )
【单选题】放射性元素放出的三种射线中,贯穿本领最强和电离作用最强的射线分别是( )
【单选题】已知终值为500,年利率10%,总期数为5的情况下,企业在第2年期末偿还的本金数,其函数表达式为:( )
【简答题】已知终值为500,年利率10%,总期数为5的情况下,企业在第2年期初偿还的本金数,其函数表达式为:( )