氧量指示不变，床温逐渐下降，且整个燃烧温度都在降低，应怎样处理？
参考答案：
应放掉一部分循环灰，使床温过高。
Soon after getting off his horse, the man appeared at the second storey windows, __ he could see nothing but trees.
A．from which
B．from where
C．in where
D．which
绒毛膜癌行次广泛子宫切除的指征是：（）
A．无化疗及随访条件
B．病灶在子宫化疗无效
C．不要求保留生育功能及化疗耐药
D．仅有局限子宫病灶无肺转移
E．切除原发灶提高化疗效果
