什么是移动式近海钻井装置?
对于账户Administrator,以下说法不正确的是()。
室分系统天线口功率设计时,需要结合小区分层结构,综合考虑()等指标来制定。 ["边缘场强","信噪比","外泄","上下行平衡"]
对下列4幅曲线图中a、b两点的有关叙述中,正确的是() ["图甲中,a、b两点叶绿体内三碳酸含量的变化趋势相反","图乙中,a、b两点神经纤维膜内外Na+浓度差相等","图丙中,a、b两点细胞呼吸消耗的葡萄糖速率相等","图丁中,a、b两点分别表示茎向光弯曲时向光侧和背光侧的生长素浓度"]
In a pneumatic automation system, a unit producing a signal to govern the position of the controller of the measured variable, relative to the value of the measured variable, is said to have(). ["reset action","proportional action","two position action","rate actio"]
外班的受力有哪些?