【简答题】单纤双向DWDM系统可用( )根光纤开通,单纤单向DWDM系统可用( )根光纤开通。
【简答题】He stood at the door, and a computer was in his hand. 改为: He stood at the door ___________________. 或: He stood at the door, ___________________.
【单选题】'No,' Kojima said, 'the point is, he spoke out, he stood up to America. Japan is just getting tired of being pushed around.'
A.
he stood up and spoke to the American audience
B.
he faced America boldly
D.
he met the Americans' challenge proudly
【单选题】He stood last but one among the twenty interviewees, _________, he failed the interview.
【判断题】单纤双向DWDM系统可用1根光纤开通,单纤单向DWDM系统可用2根光纤开通。()