舍饲肉羊时,每只成年羊每天应饲喂的食盐量为()克。
A.2—5
B.7—15
C.17—25
D.27—35
参考答案:B
You should do the things worth ____, and if you have difficulty _____ them, you can turn to your family.
A.doing; doing
B.doing; to do
C.being done; to do
D.being done; doing
正常肺部X线表现的解剖结构,哪一项错误()
A.肺野是由含气肺泡组成
B.肺纹理是主要由支气管组成
C.肺门主要由肺动、静脉组成
D.肺野的横分区是以肋骨为标点
E.右肺门上部有静脉参与构成,下部只由肺动脉构成