在“新秋月华露湛,星润渊澄”中,“湛”之义为()
A.浓重
B.澄清
C.光润
D.晶莹
参考答案:A
—Ouch! You hurt me.
—I'm sorry. But I ________ any harm. I ________ to drive a rat out.
A.don't mean; am trying
B.didn't mean; tried
C.haven't meant; tried
D.didn't mean; was trying
一个由R=3kΩ、L=4H和C=1μF三个元件相串联的电路,若电路振荡,则振荡角频率为( )。
A.375rad/s B.500rad/sC.331rad/s D.不振荡