单选题Which components are designed to be conveniently replaced by a service technician？（）A SMDs（surface mounted devices）B FRUs（field replacement units）C FESsD BEMs
题目
单选题
Which components are designed to be conveniently replaced by a service technician？（）
A
SMDs（surface mounted devices）
B
FRUs（field replacement units）
C
FESs
D
BEMs