一个4Ω的电阻与一个用电器串联在6V电源的两端,现只知道用电器的实际功率为2W,求通过用电器的电流可能是多大?
1A或0.5A
飞滑石人煎剂其用法是()
A.冲服
B.包煎
C.另煎
D.先煎
E.久煎
What will you_____ about the topic “How to learn English well” at the meeting tomorrow?
A.speak
B.say
C.tell
D.talk