A step – down choppers can be used in A) Electric traction B) Electric vehicles C) Machine tools D) All of these Related MCQs: A form of teaching writing in which learners are given step-by-step instructions is? An aero plane take off from Lahore and sun is 7 at the right of pilot. It takes immediate left turn after take-off and after a half mile it takes another step left and settle itself towards its destination, In which direction plane is flying? Step two in clinical supervision is? This step ios absent in the Calvin cycle?