焦炭硫份主要是受（）影响。
A、炼焦煤料
B、炼焦温度
C、炼焦压力
D、炼焦操作
参考答案：A
截止阀为什么低进高出？
根据句意及汉语提示完成句子。
1. We should_______(提供)clothes, food, money and anything we can for the people in Yushu.
2. Swallows never stay_______(某个地方)cold.
3. We all know _______(海洋)are much larger than lakes.
4. Zhao Jun's hometown is a good vacation_______(地点).
5. Shenzhen and Dongguan are in the _______(东部的)China.
