1 May 2020 Current Affairs in hindi | Current affairs 2020 important questions | Rrb ntpc 2020

SUCCESS KEY98 Youtube Channel Speed test Link :https://successkey98.net Download Application :Success key98 Telegram Channel LINK :https://t.me/success_key98 1 May Current affairs  2020 NASA engineers have developed a high-pressure ventilator device called ________ to treat patients with mild symptoms of covid-19 in the US. नासा के इंजीनियरों ने अमेरिका में कोविद -19 के हल्के लक्षणों वाले रोगियों […]