负载上交流电为i=10sin314t;u=10sin(314t+π/3),则负载是()。
A.纯电阻性的;
B.纯电感性的;
C.感性的;
D.容性的。
参考答案:C
Mike was usually so careful, ______this time he made a small mistake. [ ]
A. yet
B. still
C. even
D. thus
LH和FSH合成在()
A.丘脑
B.下丘脑
C.肾上腺
D.性腺
E.垂体