理论上讲,碳化塔内初冷点的温度为()。
A、60℃
B、65℃
C、70℃
D、55℃
参考答案:B
脑梗死急性期尽量不使用的药物是()
A.脑活素
B.辅酶A
C.细胞色素C
D.辅酶Q10
E.甘露醇
Mr. Black comes from America, and he has studied Chinese in China for five years. So you can talk with him _________.[ ]
A. either in English or in Chinese
B. not in Chinese but in English
C. just in English not in Chinese
D. neither in Chinese nor in English