【简答题】Voltage source inverters (VSIs) are named so because the independently controlled output is a voltage waveform. Similarly ,current source inverters (CSIs) are distinct in that the controlled AC output...
【单选题】The division of the kilowatt load between two AC generators operating in parallel is controlled by the settings and characteristics of the ().
【单选题】对关节软骨有损伤作用的人工合成抗菌药是()
【单选题】《关于企业年金个人所得税征收管理有关问题的通知》(国税函[2009]694号)对企业年金个人缴费部分个人所得税的规定是:()。
C.
不得在个人当月工资、薪金计算个人所得税时扣除
【单选题】《中华人民共和国网络安全法》(简称《网络安全法》)自( )起施行,这是中国建立严格的网络治理指导方针的一个重要里程碑。
【单选题】In an AC synchronous motor electric propulsion plant, propeller speed is controlled by varying the ___ .
B.
number of energized main motor poles
C.
propulsion generator field strength
D.
electric coupling field strength
【单选题】The AC to controlled-DC conversion is accomplished in line-frequency phase-controlled converters by means of ( )
【单选题】在下列各项所得中,不免征个人所得税的是( )。
A.
个人办理代扣代缴税款手续,按规定取得的扣缴手续费
B.
外籍个人从外商投资企业取得的股息、红利所得 c.失业人员领取的失业保险金 D.领事馆的外交代表在中国取得的所有所得