单选题
Obviously these are all factors affecting smooth operation, but the
underlying
problem is still to be identified.
A、
operational
B、
fundamental
C、
operating
D、
underneath
【正确答案】
B
【答案解析】
operational操作的;fundamental基础的,根本的;operating运行的,操作的;underneath下面的。
提交答案
关闭