涡轮流量计是以流体（）为基础的流量测量仪表。
A.振荡原理
B.动量矩原理
C.流体动压原理
D.导电现象
参考答案：B
There are varieties of programs in the TV station to many different types of interests and tastes among the public.
A．cater to
B．appeal to
C．apply to
D．adjust to
着生在对虾的步足底节外侧呈枝状的鳃称：（）。
A.侧鳃
B.关节鳃
C.足鳃
D.枝鳃
