在同一点抛出的三个物体,做平抛运动的轨迹如图所示,则三个物体做平抛运动的初速度的关系和三个物体做平抛运动的时间的关系分别是
A、
B、
C、
D、
答案:C
I can't give my son the leading position.________, he is too young;secondly, I want Mr Smith to
have the job. [ ]
A. After all
B. For example
C. In the end
D. To begin with
扩张型心肌病临床表现没有下列哪项:()
A.日趋加重的充血性心衰
B.心脏变大
C.心律失常
D.多伴有高血压
E.晚期发生肺、体循环栓塞