【单选题】设备的经济寿命是指从开始投入到( )的使用年限。 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
经常发生故障 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
B.
设备报废 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
C.
维修费大于其收益 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
D.
其年度费用最小 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
【单选题】He had read widely but seldom thought deeply, so his apparent learning was really quite ( ).
【简答题】( )把基带信号经过载波调制后,把信号的频率范围搬移到较高的频段以便在信道中传输(即仅在一段频率范围内能够通过信道)
【简答题】apparent convince curiosity detail fundamentalpatience respond spark stir ultimateThe speaker had noticed that his topic wasn’t popular with the audience, so he quickly ended his speech.
【多选题】地陪在送走旅游团后,应做好的后续工作主要有( )等。
【多选题】地陪在送走旅游团后,应做好的后续主要有( )等。
【简答题】This became apparent when the individuals he assumed to cite spoke up and said that they had never said those things. (supposition; quotation)
【单选题】He had _______ escaped by bribing a guard.
【简答题】(apparent) He had ___________ put on his best clothes for this morning’s meeting.