Dr Black is a professor of physics. _____, he is a famous writer. [ ]

A. In all

B. In brief

C. In fact

D. In addition

下列流量计中不属于集流式涡轮流量计的是（）。

A.封隔器流量计

B.伞式流量计

C.胀式流量计

D.连续式流量计