A. 460 feet (140 meters)
B. 540 feet (165 meters)
C. 560 feet (171 meters)
D. 840 feet (256 meters)
第1题:
A、Disk、Operating、System
B、Daily、Operating、System
C、Disk、Open、System
D、Date、Open、System
第2题:
A.filtering
B.centrifuging
C.depositing
D.operating
第3题:
A.发射点(天线)位置
B.天线距地面高度
C.接收点(天线)位置
D.地貌情况
第4题:
A.Has-arelationshipsshouldneverbeencapsulated.
B.Has-arelationshipsshouldbeimplementedusinginheritance.
C.Has-arelationshipscanbeimplementedusinginstancevariables.
D.Is-arelationshipscanbeimplementedusingtheextendskeyword.
E.Is-arelationshipscanbeimplementedusingtheimplementskeyword.
F.Anarrayoracollectioncanbeusedtoimplementaone-to-manyhas-arelationship.
G.TherelationshipbetweenMovieandActressisanexampleofanis-arelationship.
第5题:
A. Single-mode fiber
B. Multimode fiber
C. Copper
D. Wireless
第6题: