A sudden noise of a fireengine made him()to the door.
A、hurrying
B、hurried
C、hurry
D、to hurry
A、hurrying
B、hurried
C、hurry
D、to hurry
A、sudden evaporation of wax crystals in the lubricant B、sudden evaporation of entrapped air in the lubricant C、release of refrigerant from the oil/refrigerant mixture D、release of dissolved lubricant from the refrigerant
A、which the sudden operational failure B、that the sudden operational failure C、the sudden operational failure D、the sudden operational failure of which
A、the signal to noise of the current optical amplifier B、the signal to noise of the previous amplifier or source C、the signal to noise introduced by the optical multiplexer D、the accumulated noise to signal ratio of the optical channel
A、an improper rudder response B、hammering noises in the equipment or transmission lines C、popping or sputtering noises D、all the above
A、 the signal to noise of the current optical amplifier B、 the signal to noise of the previous amplifier or source C、 the signal to noise introduced by the optical multiplexer D、 the accumulated noise to signal ratio of the optical channel
A、signal strength 46dBm, noise level 95dBm B、signal strength 74dBm, noise level 94dBm C、signal strength 68dBm, noise level 79dBm D、signal strength 50dBm, noise level 56dBm