A.blue whales are no longer endangered with the use of the new listening system
B.military technology has great potential in civilian use
C.new radio devices should be developed for tracking the endangered blue whales
D.opinions differ as to whether civilian scientists should be allowed to use military technology
[单选题]A.90~200B.230~350C.370~470D.1150~1800
[单选题]A.C1对应的F1B.C2对应的F2C.C3对应的F3D.C4对应的F4
[单选题]A.甲B.乙C.丙D.丁
[单选题]A.0B.1C.2D.3
[单选题]What will happen if kids are always on their phones?( )A.They will behave b
[单选题]The reason for wind energy being an ideal sustainable energy source is that
[判断题]Renewable energy and distributed generation are not viable in economic term
[判断题]The drugs which helped patients relieve the pain used to have serious side