Which equation shows right ratio between the frequency (f) and the wavelength (Lambda) of radio waves?

What is the term which refers to the supply of electrical energy required to supply radio installations on every ship for the purpose of conducting distress and safety radio communications in the event of failure of the ship’s main and emergency sources of electrical power?

A.Emergency
B.Reserve
C.Ship’s
D.Ship’s

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甲胎蛋白放射免疫测定用于( )A.卓艾综合征的诊断B.原发性肝癌的诊断C.急性心肌梗死的诊断D.糖尿病分型E.诊断甲状腺功能减退症的灵敏指标促胃液素放射免疫测定用于( )A.卓艾综合征的诊断B.原发性肝癌的诊断C.急性心肌梗死的诊断D.糖尿病分型E.诊断甲状腺功能减退症的灵敏指标请帮忙给出每个问题的正确答案和分析，谢谢！ 点击查看答案