在大型养路机械的司机室内，通常都装双针空气压力表，其中一块压力表的红针指示（）压力，黑针指示列车管压力。
A. 均衡风缸
B. 列车管
C. 制动管
An axial piston pump differs from a radial piston pump as the pistons of an axial piston pump are positioned _____.
A. radially from the shaft
B. parallel to each other and to the shaft
C. parallel to each other but at a right angle to the shaft
D. at an angle to each other and to the shaft
多用途搅拌机一般具有()功能，它兼有()等功能。
A. 和面、压面
B. 和面、搅拌
C. 分割、搅拌
D. 揉圆、搅拌
下列哪项是独活的功效
A. 祛风湿，止痛，消骨鲠
B. 祛风湿，止痛，清热解毒
C. 祛风湿，利水，止痛
D. 祛风湿，止痛，解表
E. 祛风湿，止痛，安胎
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