Titanium has the (strength) of steel but weighs (half only) as much, hence its (

游客2024-01-05  5

问题 Titanium has the (strength) of steel but weighs (half only) as much, hence its (advantage) for use (in aircraft).

选项 A、strength
B、half only
C、advantage
D、in aircraft

答案 B

解析
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