【单选题】当水温较低时,水温传感器的电阻值大;水温高时,电阻值 。
【简答题】当水温较低时,水温传感器的电阻值大;水温高时,电阻值 。
【判断题】当水温较低时,水温传感器的电阻值大;水温高时,电阻值小。
【单选题】The cave very dark, he lit some candles light.
【单选题】The cave ___ very dark, he lit candles _____ light.
【单选题】The cave being very dark, he made some candles light.
【简答题】饱和链烃又称( ),最简单的烷烃是( ),其结构简式为( )。
【单选题】The cave ____ very dark, he made some candles ____ light.
【单选题】The cave ______ very dark, he lit some candles ________ light.
【单选题】下列说法正确的是( )
A.
分子组成符合C n H 2n 的烃,一定是饱和烃
B.
甲烷是烷烃中最简单的烃,也是含碳量最低的烷烃