如图,A1测 的电流,A 测 的电流;若A1的示数是0.8A ,A 的示数是1.9A ,则通过灯泡L2的电流I2 = A .
L1 ;总 ;1.1
Either you or one of your students ________ to attend the meeting ________ tomorrow.
A.are; to be held
B.is; being held
C.is; to be held
D.are; having held
阴囊透光试验阳性见于()
A.阴囊鞘膜积液
B.睾丸肿瘤
C.以上都不是
D.阴囊橡皮肿
E.阴囊疝