如图所示，是小敏同学在某次实验探究中连接的电路．开关S2控制的_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题填空题

如图所示，是小敏同学在某次实验探究中连接的电路．开关S₂控制的是灯______，电流表测量的是______的电流．

答案

由图可知：电流从电源正极出发，经过开关S₁、电流表之后分成两条路，一条经过灯L₁回到负极；另一条经过灯L₂、开关S₂回到负极．开关S₂与灯L₂串联，所以开关S₂控制的是灯L₂；电流表接在干路上，电流表测量的是干路电流．

故答案为 L₂，干路．

填空题

选择恰当的单词并用其正确形式将短文补全完整。

rule,practice,join,after,dinner,for,out,read bed,get

     Emily has so many      1      at home. She has to do her homework       2       school. She can't go     3     on school nights. She has to wash the dishes（洗碗）after       4       ,and then she can watch TV      5      . an hour. She likes       6      . .She usually does some reading at night. She has to be in      7      . by ten
o'clock because she has to       8      . up early the next morning. She        9      a music club and often goes
there on weekends. She has to       10       her guitar every day. But she doesn't think she's unhappy.

填空题

在VBA编程中检测字符串长度的函数名是【11】。