现有阻值分别是10欧，15欧的电阻两只，允许通过它们的最大电流分别是1安和0.6安。若将它们串联起来使用，两端允许加的最大电压是________伏。
15
读一读，判断正(√)误(×)。
( ) 1. New Year's Day is in January.
( ) 2. Chinese New Year is usually in February.
( ) 3. Christmas is always in December.
( ) 4. You don't go to school in August.
( ) 5. Teachers' Day is in October.
( ) 6. Spring usually starts from June.
蛤蚧一般不用治（）
A.肺虚咳嗽
B.虚劳喘咳
C.风寒咳嗽
D.肾虚作喘
E.肾虚阳痿
