铝合金门框与墙体的缝隙,应用()填实,外表面再填嵌油膏。
A.水泥砂浆
B.石灰砂浆
C.混合砂浆
D.矿棉式玻璃棉毡
参考答案:D
汽车甲沿着平直的公路以速度v0做匀速直线运动,当它通过某处时,该处恰有汽车乙正开始做初速为0的加速运动去追甲车,根据上述已知条件 [ ]
A.可求出乙车追上甲车时乙车的速度
B.可求出乙车追上甲车时乙车所走的路程
C.可求出乙车从起动到追上甲车所用的时间
D.不能求出上述三者的任何一个
Which of the following statements is true according to what you hear a. The growth rate in 2003 is lower than that of the previous year. b. This year the government will continue to support lending and investment in construction. c. The government will cut state bonds by 35% in 2004. d. State bonds issued to finance construction will be $3.6 billion less this year than last.