The positive sequence voltages of phase A, B, C are distributed in ( )
A: the same direction
B: counter clockwise
C: clockwise
D: indeterminacy
A: the same direction
B: counter clockwise
C: clockwise
D: indeterminacy
举一反三
- Backing means the wind ___ . A: is changing clockwise in direction B: is changing anticlockwise in direction C: is changing cyclonically or variably in direction D: emains unchanged in direction at the time
- ______ rotate in a counter- clockwise direction （逆时针方向）around the “eye,” which is the center of the storm and the calmest part.
- In order to determine the slope and displacement of a beam by integration, it is important to use the proper signs for M, V or w. Positive deflection v is ( ) and as a result, the positive slope angle [img=9x19]17de8338539dd00.png[/img] will be measured ( ) from the [img=11x14]17de83385e83d59.png[/img] is positive to the ( ). A: upward, counterclockwise, right B: upward, counterclockwise, left C: downward, clockwise, right D: upward, clockwise, left
- 12.Which of the following words is NOT a compound? A: honey-bee B: without C: clockwise D: blueprint
- 【填空题】If you rotate the feed rate knob clockwise, the feed rate _______________ .