题目内容

Motors used in high speed applications have

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

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Which of the following is a type of low-torque high-speed motor?

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

Which type of motion is transmitted by hydraulic actuators?

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

5.基本呼吸中枢位于( )

A. 脊髓
B. 延髓
C. 脑桥
D. 下丘脑
E. 大脑皮层

4.CO2在血液中运输的主要形式是( )

A. 物理溶解
B. 形成氨基甲酸血红蛋白
C. 形成HCO3-
D. 和水结合形成碳酸
E. 形成CO血红蛋白

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