Directions: in this part, you are going to listen to five transmissions or short exchangesand choose the correct answer from four choices.
A. right
B. left
C. south
D. north
查看答案
depressurize 释压
A. To preform the smoke emergency procedures
B. To make an emergency descent
C. To make an immediate descent
D. To make a rapid descent for ventilation
actuators 作动筒
A. loss of electrical power
B. flight control surface malfunction
C. long holding en route
D. engine failure
中等分辨率遥感扫描影像的特征包括宏观综合概括性强、、。
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