下列属于专性厌氧的细菌是()
A.军团菌
B.布鲁菌
C.破伤风梭菌
D.肠球菌
E.幽门螺杆菌
参考答案:C
Not only his parents but also his brother to the Summer Palace. They haven’t been back.
A.have been
B.have gone
C.has been
D.has gone
如图所示,是A、B、C三种固体物质的溶解度曲线.请据图回答下列问题:
(1)t1℃时,溶解度最大的物质是______(填序号);
(2)t2℃时,A物质饱和溶液的质量分数为______;
(3)要从B物质的饱和溶液中得到B物质的晶体,一般采用蒸发溶剂的方法,这是因为______.