信号电源监控装置中的监控箱的组成部分有哪些？
参考答案：
电源、电池、主控板、调制解调器、电源板、高压接口板、测控接口。
A worker is most likely to earn economic rent when the marginal revenue product (MRP) from her labor and the supply curve for her type of labor exhibit which of the following characteristics MRP Supply curve（）①A. High More elastic ②B. LowLess elastic ③C. High Less elastic
A. ①
B. ②
C. ③
骨产道解剖特点，正确的是（）。
A.骨盆入口横径比前后径短
B.骨盆出口平面在同一平面上
C.骨盆横径比前后径长
D.骨盆出口横径大于前后径
E.最小骨盆平面为中骨盆平面
