答案:简称调速器、超速保护装置
A. (A)1DZ
B. (B)2DZ
C. (C)5DZ
A. A.100
B. B.120
C. C.140
A. (A)主要部件
B. (B)关键部件
C. (C)各部件管系等
A. (A)50kPa
B. (B)60kPa
C. (C)70kPa