在一定阳极电压的作用下,若栅极(),电子就难以越过栅极而达到阳极,阳极电流就越小。
A. 电位越正,对电子的排斥作用越弱
B. 电位越正,对电子的排斥作用越强
C. 电位越负,对电子的排斥作用越弱
D. 电位越负,对电子的排斥作用越强
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电影的拍摄部分已经完成,或者个别的演员拍完他个人的戏,我们常用哪个电影术语来表示?
Flanking rudders effect a vessel’s heading because of the().
A. effect of the propeller flow on the rudders
B. water flow due to the vessel's movement through the water
C. tunnel affect of the water flow past opposing rudders
D. discharge current being channeled to impinge on the vessel's deadwood