【单选题】( )是利用功率器件,有规律地控制逆变器中主开关的通断,从而得到任意频率的三相交流输出。
【多选题】在师生沟通的技巧中,正确、清楚地传送信息的方法应该是( ),以及重视自己的感觉,注意传送者的非语言提示。
B.
少用主观判断,适当情况下可做些让步,在许可范围内,给学生更多自我选择的空间
C.
试着接受学生的观点,做个细心的听众,以诚挚的态度,仔细聆听学生所提的问题,适时地给予关怀
E.
使用有效的专注技巧,如目光接触、表情、手势等非语言行为
【单选题】According to the author, one of the reasons for the rising of gold price is ______.
A.
the increasing demand for gold
B.
the depreciation of the euro
C.
the link between the dollar and gold
D.
the Increment of the value of the dollar
【单选题】Over a three-week period, the price of an ounce of gold increased by 25% in the first week, decreased by 20% in the following week, and increased by 5% in the third week. If the price of gold was G do...
【单选题】The price of diamond rings has risen sharply _______ the price of gold rings has gone down.
【单选题】()是利用功率器件,有规律地控制逆变器中主开关的通断,从而得到任意频率的三相交流输出。
【单选题】In the Western world, currencies are particularly valued against
【简答题】变频器中的逆变器是利用功率器件,有规律地控制逆变器中主开关的通断,从而得到任意()的三相交流输出。
【单选题】According to the passage, the rise of gold price ______.
B.
will attract some central banks to sell gold
C.
will impel central banks to switch into paper money
D.
will lead to a dollar crisis