人类慢痛的主要投射皮层是（）
A．中央前回
B．第一和第二感觉区
C．皮层联络区
D．扣带回
参考答案：D
A "Workaholic" works too much and usually forgets to have meals and go to bed. _____, he doesn't have
good health. [ ]
A. As a matter of fact
B. As a whole
C. As a result
D. AS a rule
悬臂皮带机装置的电机功率（）.
A、P=132kW
B、P=160KW
C、P=220kW
D、P=300kW
