A. A. A. Beta-blockers are drugs used to treat high blood pressure. They block the effects of the sympathetic nervous system on the heart. This reduces the work of the heart so that it requires less blood and oxygen. As a result, the heart doesn't have to work as hard, which in turn lowers blood pressure.. A. Beta-blockers are drugs used to treat high blood pressure. They block the effects of the sympathetic nervous system on the heart. This reduces the work of the heart so that it requires less blood and oxygen. As a result, the heart doesn't have to work as hard, which in turn lowers blood pressure.
sliver noun [C]. âº a very âsmall, âthin âpiece of something, usually âbroken off something âlarger: a sliver of âglass Just a sliver of âcake for me, âplease-I shouldn't really be having any. (Definition of sliver from the Cambridge Advanced Learnerâs Dictionary & Thesaurus Â© Cambridge University Press). See all translations.
A transceiver is a device comprising both a transmitter and a receiver which are combined and share common circuitry or a single housing.When no circuitry is common between transmit and receive functions, the device is a transmitter-receiver.The term originated in the early 1920s.lmost all modern amateur radio equipment is now a transceiver but there is an active market for pure radio receivers, mainly for shortwave listening (SWL) operators. An example of a transceiver would be a walkie-talkie or a CB radio.