【简答题】交流电每秒钟周期性变化的次数叫(),用字母()表示,其单位名称是(),单位符号用()表示。
【单选题】What has contributed to the rapid economic growth in China and India?______.
A.
Copying western-style. economic behavior
B.
Heavy reliance on the hand of government
C.
Timely reform. of government at all levels
D.
Free market plus government intervention
【简答题】交流电每秒种周期性变化次数叫()用字母()表示,它的单位是()。
【简答题】交流电在单位时间内(1秒)完成周期性变化的次数叫做_____;完成一次周期性变化所用的时间叫做_____。周期用字母_____表示,单位是____。频率用字母____表示,单位____。
【简答题】What has contributed to the current wave of globalization?
【简答题】解决(问题),verb, ˈsȯlv \ , 这个单词是:__(1)___ 它的名词形式是:__(2)___, 它的动词过去式__(3)__和过去分词__(4)__
【判断题】交流电每秒钟周期性变化的次数叫频率,用字母f表示,其单位名称是赫兹,单位符号用Hz表示。
【简答题】What has contributed to the growth of advertising industry?
【单选题】What has contributed to the rapid economic growth in China and India?
A.
Copying western-style economic behavior.
B.
Heavy reliance on the hand of government.
C.
Timely reform of government at all levels.
D.
Free market plus government intervention.