带式输送机胶带无破裂，保护层脱皮不得超过（）。
A.0.2m2
B.0.4m2
C.0.3m2
D.0.5m2
参考答案：C
His wife is finding fault with him, which makes him very angry.[ ]
A. constantly
B. regularly
C. previously
D. instantly
下述( )成立时，称X—Y为平凡的函数依赖。
