料桶温度的范围是()。
A、粘流温度或熔点和热变形温度之间
B、粘流温度或熔点和热分解温度之间
C、脆化温度和热分解温度之间
D、热变形温度和脆化温度之间
参考答案:B
桔梗的功效是()
A.利水消肿
B.宣肺利咽
C.制酸止痛
D.清肠疗痔
E.温肺祛痰
How did it ________ that the ancient building was burnt down in an hour?
A.happen
B.occur
C.take place
D.come about