【单选题】The author of this passage correlates the fisherman's use of the net to______.
C.
a controlled experiment
【简答题】SECTION B ENGLISH TO CHINESE Directions: Translate the following text into Chinese. Scientific methodology is based on generating hypotheses and testing them to see if they make sense; in laboratories...
【单选题】According to the passage, _____is the key factor to making 'Nowcasts' a reality.
A.
scientific and technological advances such as radar, or satellites
D.
advanced computer programs
【判断题】获取信息快,更新周期短,具有动态监测功能,是遥感的突出特点。
【单选题】All the universities have duty to _____ their students _____of the quick development of the scientific world. [ ]
【单选题】What technique does the professor use to explain the practical application of the scientific method?
【判断题】线粒体提供下包生命活动所需的能量,是细胞的“供能站”。
【判断题】电气控制电路接线的校核和测绘是电气安装和维修工程一项重要内容。实际工程中,借助PLC的状态监控功能来校核或测绘PLC的I/O接线,是非常实用的方法,其中软元件测试的强制输出功能特别适用于单点负载的测试,例如PLC输出负载为电磁阀线圈、继电-接触器线圈、指示灯等。对于输入点的测试和校核,也可以用手动方法使接近开关动作或复位,根据PLC输入点指示灯亮灭状态来确定接近开关的输入点分配,但这种观察方法比较...