怀疑有下颌下腺导管结石,哪种X线片检查为首选()。
A.下颌骨侧位片+下颌横断颌片
B.下颌下腺造影
C.下颌体腔片
D.下颌曲面断层片
E.下颌下腺侧位片+下颌横断颌片
参考答案:E
. --- The company spent thousands of dollars to promote its new product.
--- They _____: the world itself was more than ready to buy.
A.shouldn’t have bothered
B.needn't have bothered
C.couldn’t have bothered
D.mustn’t have bothered
企业财务管理的( )功能是指企业通过借用外来资金提高投资者收益的客观能力。
A.理财B.财务杠杆C.调控D.节流