The two goals of an operation system are( )and efficiency．

A．convenience

B．quick

C．optimize

D．standardize

[单选题]The two goals of an operation system are（71）and efficiency.（71）A．convenienceB．quickC．optimizeD．standardize

[单选题]The operation of _______two alternators requires the voltages to be equal and also in phaseA．parallelingB．series-mountingC．runningD．controlling

[单选题]The operation of paralleling two alternators requires the voltages to be _____ and also in phaseA．zeroB．eliminatedC．differentD．equal

[单选题]The operation between two fuel injections is called a （）.A . turning cycleB . working cycleC . working hourD . working stroke

[单选题]Land bridge system is in operation for the movement of（ ）on certain importa

[单选题]Land bridge system is in operation for the movement of（ ）on certain importa

The underground connection system is _______ two levels.A. made inB. made up ofC

The underground connection system is ___ two levels.A. made inB. made up ofC. ma

In addition to a two-party system, there are still several minor parties, such a

[单选题]（）is for the operation ordering and the information exchange by internet among the firms. A . order processingB . order makingC . Electronic order systemD . order form