题目内容

Which motor causes heavy loads due to its usage in order to move at constant lower speeds?

A. Low-torque high-speed motors
B. High-torque low-speed motors
C. both a and b
D. none of the above

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A. 1-B, 2-A, 3-D, 4-C
B. 1-A, 2-C, 3-B, 4-D
C. 1-C, 2- A, 3-B, 4-D
D. 1-B, 2-D, 3-A, 4-C

A. high torque with high speed
B. low torque with high speed
C. high torque with low speed
D. none of the above

A. radial piston motors
B. axial piston motors
C. bent axis motor
D. gear motor

A. linear motion
B. rotary motion
C. both a and b
D. none of the above