有限责任公司董事任期由公司章程规定，但每届任期不得超过3年。( )
参考答案：对
For an A-rated corporate bond that has deteriorating fundamentals, but is expected to remain investment grade, the greatest risk is most likely:（）
A. default risk.
B. liquidity risk.
C. credit spread risk.
制动器的哪三部分需要调整？
