你可能感兴趣的试题
is in favor of prohibiting passengers-use of electronic devices completely has overestimated the danger of electromagnetic interference hasn’t formed his own opinion on this problem regards it as unreasonable to exercise a total ban during flight
messages certificates applets channel
server firewall clinet router
server firewall clinet router
the radio apparatus fitted on the portside the radio with a portable equipment the radio equipment which is easily movable the portable radio with some apparatus"
conformance relate belong secrecy
1.95GHz 2.45GHz 4.45GHz 11.45GHz
1Mb/s 11Mb/s 54Mb/s 100Mb/s
They may have been caused by the damage to the radio systems. They may have taken Place during take-off and landing. They were proved to have been caused by the passengers, portable computers. They were suspected to have resulted from electromagnetic interference.
conformance relate belong secrecy
Fixed CO2, semi-portable CO2, then hand portable CO2 Semi-portable CO2, fixed CO2, then hand portable CO2 Hand portable, semi-portable CO2, then as a last resort the fixed CO2 system Hand portable, fixed CO2, then as a last resort the semi-portable CO2
1.95GHz 2.45GHz 4.45GHz 11.45GHz
Because it is extremely dangerous to conduct such research on an airplane Because it remains a mystery what wavelengths are liable to be interfered with. Because research scientists have not been able to produce the same effects in labs Because expert lack equipment to do such research.
they don’t believe there is such a danger as radio interference the harmful effect of electromagnetic interference is yet to be proved most passengers refuse to take a plane which bans the use of radio and cassette players they have other effective safety measures to fall back on
1Mb/s 11Mb/s 54Mb/s 100Mb/s
a new regulation for all airlines the defects of electronic devices a possible cause of aircraft crashes effective safety measures for air flight
messages certificates applets channel