【判断题】摇臂轴为空心结构,润滑油经气缸盖和摇臂轴支座上的油道进入摇臂轴内部
【判断题】残积土是母岩表层经风化作用破碎成岩屑或细小颗粒后,未经搬运残留在原地的堆积物。
【单选题】On April 24th, 2011, Hu Jintao, ________ chairman of the P.R.C., and other state leaders attended Tsinghua centennial (百年的) celebration at ________ Great Hall of the People in Beijing.
B.
/;the C.the; the D.the; /
【单选题】手绘仪器图时,绘制细实线用的铅笔是( )铅笔 。
【单选题】Your blunt treatment of disputes would put other people in a negative frame. of with the result that they would not be able to accept your proposal.
【单选题】As the threat of nuclear war ______ , other things began to worry us.