税收的( )是由作为国家政治权力表现形式的税收法律的强制性加以体现的,与纳税人是否自觉自愿纳税是无关的。
A.固定性
B.强制性
C.无偿性
D.公开性
参考答案:B
Experiment after experiment, they tried to acquire the _____evidence and ______ data needed to solve the technical problem. [ ]
A. concise; accurate
B. precise; concise
C. adequate; accurate
D. enough; concrete
属非牙源性囊肿的是
A.Gorlin囊肿 B.牙瘤 C.单纯性骨囊肿 D.根尖周囊肿 E.鼻牙槽囊肿