同轴车轮直径相关过大，小轮径车轮容易产生踏面滑行。
参考答案：对
A．To intensify Tokyo’s role in peacekeeping missions abroad.
B．To stop the country’s air force transport mission in Iraq.
C．To override the lower house’s decision.
D．To approve the Democratic Party’s bill to continue the mission.
B细胞表面抗原不包括（）
A.CD19
B.CD20
C.CD21
D.CD28
E.CD40
