上止点是指活塞顶面离曲轴中心线（）时的止点。
A.最远
B.最近
C.1/2
D.1/3
参考答案：A
（-2）2+（-2）3×5-（-0.28）÷0.4．
One of the most popular Korean TV dramas of all time, Dae Jang Geum(《大长今》), _______in Hunan TV Station recently.
A．will release
B．are releasing
C．has been released
D．has released
