电导率
载流子数
载流子迁移率
第1题：
A.ambulances
B.equipments
C.mechanisms
D.appliances
第2题：
All electrical appliances aboard a vessel should be grounded to ______.
A.prevent them from falling when the vessel rolls
B.protect personnel from electrical shock
C.increase their operating efficiency
D.prevent unauthorized personnel from operating them
第3题：
[A] concentration
[B] continuity
[C] conformity
[D] conductivity
第4题：
下面哪一个打开备用电源的操作顺序是正确的？
第5题：
电气设备（electrical equipment）
第6题：
Loran-C is which type of system ________．
A.Reflected electron
B.Electrical radiation
C.Quarterpoint electrical navigation
D.Hyperbolic radio navigation
第7题：
thermal conductivity gauge的意思是（）。
第8题：
In Trial 9, the electrical force exerted by Sphere Y on Sphere X and the electrical force exerted by Sphere X on Sphere Y were exerted in which direction(s)?
A.east； east
B.east； west
C.west； west
D.west； east
第9题：
Electrical conductivity（）
第10题：
aimed at the source of the flames
fogged above the equipment
shot off a flat surface onto the flames
used to shield against electrical shock