电解质与水的平衡有着依存关系，钾、钠含量的平衡是维持水平衡的根本条件。( )
参考答案：对
— What do you think of the sweater?
— It's too , and I don't have enough money to buy it. [ ]
A. nice
B. lovely
C. popular
D. expensive
在梯形图编程中，常闭触头与母线连接指令的助记符应为（）。
A、LDI
B、LD
C、OR
D、ORI
