在SDH传输系统中采用误块比采用误码更能反映实际的传输性能。
参考答案：对
冠心病的易感人格为（）
A.A型人格
B.B型人格
C.C型人格
D.A+B混合型人格
E.C+B混合型人格
The managing director took the ______ for the accident, although it was not really his fault.
A. guilt B. blame C. charge D. accusation
