【单选题】井下电机车的轨距有600 mm、 762 mm和( )mm三种。
【单选题】An interface requirement is a:
A.
functional requirement
【单选题】What is NOT a problem when carrying coal ________.
A.
The requirement for through-ventilation
B.
The corrosion some types of coal will cause to the ship
D.
Generation of methane gas
【单选题】What is the reserve requirement?
A.
The requirement of a bank to deposit a percentage of money
B.
The requirement for deposits in cash
C.
The percentage of a bank's deposits in the form. of cash reserves
D.
The requirement for cash reserves
【简答题】用人单位招用劳动者,不得扣押劳动者的居民身份证,可以扣压特种作业操作资格证件。判断对错
【多选题】中国知网CNKI数据库的全文数据输出文件的格式为