40.當油類或氣體從鬆動或破裂處滲出或溢出時，此系統流路有

(A)leakage

(B)over-temperature

(C)returntoserviceable

(D)dent

答案：登入後查看
統計： A(83), B(17), C(18), D(3), E(0) #283639