Our school is famous _____________ its sports. [ ]
A. on
B. in
C. for
D. of
答案:C
喉上动脉一般是由下列哪条血管发出的()。
A.舌动脉
B.面动脉
C.甲状腺上动脉
D.枕动脉
E.咽升动脉
荧光灯具格栅的最低效效率为( )。
A.40% B.55% C.60% D.75%