内需不足时可通过紧缩性的财政政策拉动经济增长。
A. 对
B. 错
Lesson 12 Understanding Text A T or F -1The VOR system is working in the frequency range of 108MHz to 117.95 MHz.
A. 对
B. 错
Lesson 12 Understanding Text A T or F -2VOR (VHF Omnidirectional Radio Range) is the ICAO standard long range navigation aid that is installed at airports and en-route locations.
A. 对
B. 错
Lesson 12 Understanding Text A T or F -3A VOR ground station sends out a master signal, and a highly directional secondary signal that varies in phase 60 times a second compared to the master.
A. 对
B. 错