肱二头肌的拮抗肌是()
A．肱肌
B．肱三头肌
C．肱桡肌
D．三角肌
E．胸大肌
参考答案：B
_____________ in my present work, I would be quite willing to do what you ask me to.
A．If I am not engaged
B．If I don’t engage
C．Were I not engaged
D．Didn’t I engage
采用中间再热器可以提高电厂（ ）。
A．出力
B．热经济性
C．煤耗
D．热耗
