企业客户信用等级评定内容有()
A、信用履约
B、偿债能力
C、盈利能力
D、客户领导者素质
E、发展前景
参考答案:A, B, C, D, E
ZG80-1500型电机车集电器不能升起检查哪些部位?
An emergence sea anchor may be constructed by type of extinguisher?().
A.a boat bucket
B.an air tank filled with water
C.an oar and canvas weighted down
D.All of the above