ESP系列自动血培养系统的检测原理是()。
A.导电性的改变
B.电压的改变
C.培养瓶内压力的改变
D.荧光信号的改变
E.光电信号改变
参考答案:C
In the next 30 years, we could see more heat waves like_____ now occurring in the US or the kind that swept across Europe in 2003 that caused tens of thousands of deaths.
A.those
B.that
C.this
D.the one
试述有孔毛细血管的结构及主要分布。