单项选择题

The seven segment arrangement for numerical(数字的) display on consoles, test meters and other applications can be either（）

A.UJT or BJT
B.BCD or OCD
C.JFET or IGFET
D.LED or LCD

相关考题

Usually, emergency electricity supplies to on board（）A....

单项选择题Usually, emergency electricity supplies to on board（）

A.Cargo winch
B.Windlass
C.Steering gear
D.Main air compressor

Before doing any work on a hydraulic system equipped wi...

单项选择题Before doing any work on a hydraulic system equipped with accumulators, you should（）

A.drain the accumulators and purge with oxygen
B.bleed off all stored energy from the accumulators completely
C.charge the accumulators to prevent system energy loss
D.pump the hydraulic fluid into the accumulators to prevent fluid loss

The ability of lubricating oils to resist viscosity cha...

单项选择题The ability of lubricating oils to resist viscosity changes during temperature changes is indicated by the（）

A.American Petroleum
B.Institute number viscosity index number
C.Seconds Saybolt Furol number
D.Seconds Saybolt Universal number

船舶电气与船舶安全

The seven segment arrangement for numerical(数字的) display on consoles, test meters and other applications can be either（）