搜题请搜索小程序“爱下问搜题”
问题 填空题

图1电流表的示数是 _________ A；

图2电压表的示数是_________V；

图3所示是某同学用电压表测电压时指针偏转的情况，发生该现象的原因是_________．

答案

0.7；12.5；电压表的正负接柱接反了

完形填空

请根据课文内容及首字母提示，完成以下短文。（每空2分，共10分）

Betty Rixon is American. Her father is a teacher. Her mother is a (1) s_______________. They both work at Beijing (2) I___________________ School. Daming’s mother is a doctor, and his father is a (3) f__________________ manager. Tony’s mother is a (4) t_________________ and his father is a hotel manager. Wang Lingling’s (5) p_________________ are factory workers.
查看答案
单项选择题 A型题

正常成人血清尿素氮（BUN）参考范围为（）。

A．3.2～7.1mmol/L

B．2.2～5.1mmol/L

C．3.8～6.1mmol/L

D．3.2～7.1mmol/L

E．2.3～7.1mmol/L
查看答案