【单选题】PS软件的裁剪工具描述正确的是
A.
裁剪工具可以按照自定的尺寸,宽度,分辨率来裁图
【单选题】Traditional Radio Frequency Identification was ____.
A.
less efficient than the new smart tags
B.
harder to produce than the new smart tags
C.
more expensive than the new smart tags
【多选题】药品的包装必须印有国家指定的专有标识的药品是( )
【单选题】In recent years, satellite television has started to be broadcast in the radio frequency range______.
A.
between 3.4 GHz and 7 GHz
B.
between 12 GHz and 14 GHz
C.
between 14 GHz and 21 GHz
D.
between 21 GHz and 27GHz
【单选题】在PS中,如果要移动选区的内容,这时应该单击哪个工具()
【单选题】The transmission time duration of a single pulse of radio-frequency energy is a function of the ().