一个采煤工作面的绝对瓦斯涌出量大于（）立方米/分钟，用通风方法解决瓦斯问题不合理时，必须建立抽放系统。
A.2
B.3
C.5
参考答案：C
根据句子意义选择方框内所给单词或短语的正确形式填空
小题1:She finds painting or drawing very ______________________________.
小题2:Maria ________________________________ Xia’men university in 2008.
小题3:Usually, it’s _________________________ I can’t find anywhere to sit.
小题4:Sara is ________________________________ ill health at the moment.
小题5:_________________________ can cause headaches and other illnesses.
小题6:We ________________________________________ to clean the floor.
小题7:The work is __________________ , so you’d deal with it as soon as possible.
小题8:He always ____________________ to the teacher about too much homework.
小题9:Computer ____________________________________ in our daily life.
小题10:To meet the needs of growing population is the main ___________ of this century.
量具的（）是：刻度尺上相邻刻线间所代表的长度单位数值。
A、分度
B、分度值
C、刻度
D、刻度值
