用指针式万用表测量电阻时,正确量程应该使仪表指针偏转角度()的位置。
参考答案:大于满刻度1/2
Five people won the "China's Green Figure" award, a title ____ to ordinary people their contributions
to environmental protection. [ ]
A. being given
B. is given
C. given
D. was given
人体就像一部复杂的机器,包含许多物理知识.
(1)人体是______(填“导体”或“绝缘体”),人体的安全电压不高于______V;
(2)正常人的心脏推动血液流动的功率约为1.5 W,那么在10 s内心脏做的功是______J,这些功可把一个1kg的物体匀速举高______m.(g取10N/kg)