3 years ago

During world war ii, the effectiveness of german u-boats and underwater mines was ended by the development of select one:

1 answer:

8 0

<span>select one:
a. acoustic countermeasures.
b. sonar.
c. centimetric radar.
d. both sonar and centimetric radar.
e. all these answers are correct.
A quick google search said centimetric radar was invented in 1935 during the range of WWII.
Hope I helped some</span>

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