单项选择题
The emergency communication set’s transmitter should not be tested except when（）by a public radio inspector.
A.inspecting
B.inspected
C.inspects
D.having inspected
点击查看答案&解析
相关考题
-
单项选择题
Which expression has the different meaning from entry into force ? “entry into force” means is（）.
A.coming into effect
B.moving to full effect
C.being based on force
D.coming into force -
单项选择题
Radar bandwidth is normally（）to the range scale and the associated pulse length.
A.fixed
B.matched
C.fitted
D.equal -
单项选择题
A rectangular area is described in degrees of latitude and longitude from the latitude and longitude of the southwest corner of（）.
A.square
B.triangle
C.circle
D.rectangle
