【单选题】在线圈匝数不变时,要增加其产生的磁动势,则 要增加。
【单选题】碳酸钙和磷酸钙都是难溶物质,但在血液中能以溶胶状态稳定存在,主要原因是( )。
【简答题】在调试程序时,为了观察某个变量的变化情况,就需要为程序设置 ______ 。
【单选题】Zeaxantin is most similar in chemical structure to:
【简答题】神经元具有 _ _ 、 _ _ 的功能。
【单选题】The message the author transmits to us is that ______.
A.
a lie detector can make a good record of nerve impulses
B.
a liar benefits himself from lying, but only at the cost of others
C.
it is vital for us to be truthful to each other
D.
lying will be checked by more advanced lie detectors