一个半径比地球大2倍,质量是地球质量的36倍的行星,它的表面的重力加速度是地球表面的重力加速度的: [ ]
A、9倍
B、3倍
C、4倍
D、18倍
答案:C
小题1:That boring film made all of us feel ________ (sleep).
小题2:The car must be one of those _________ (direct).
小题3:I hope the 2012 Olympic Games in London will be a great _________ (successful).
小题4:You should learn to look after ______ (you) since all of you have grown up.
如果工程机械按揭贷款的借款人违约且连续()个工作日内不能纠正的,则应当停止与经销商和生产厂家的业务合作。
A.5
B.10
C.15
D.30