16.设a,x>0,化简(27a${\;}^{-\frac{1}{3}}$•$\sqrt{{x}^{-\frac{1}{3}}{a}^{2}•\root{4}{{x}^{\frac{4}{3}}}}$)${\;}^{\frac{1}{3}}$的结果是( )
A. | 3a${\;}^{\frac{2}{9}}$x | B. | 3a${\;}^{\frac{1}{3}}$ | C. | 3a${\;}^{\frac{2}{9}}$ | D. | 3a${\;}^{\frac{1}{3}}$x2 |
12.m是实数,则下列式子中可能没有意义的是( )
A. | $\root{4}{{m}^{2}}$ | B. | $\root{5}{m}$ | C. | $\root{6}{m}$ | D. | $\root{5}{-m}$ |
10.已知函数y=f(x)是定义在R上的偶函数,且f(x+1)=f(x-1),当x∈[0,1]时,f(x)=2x-1,则函数g(x)=f(x)-ln$\frac{x}{2}$的零点个数为( )
0 250000 250008 250014 250018 250024 250026 250030 250036 250038 250044 250050 250054 250056 250060 250066 250068 250074 250078 250080 250084 250086 250090 250092 250094 250095 250096 250098 250099 250100 250102 250104 250108 250110 250114 250116 250120 250126 250128 250134 250138 250140 250144 250150 250156 250158 250164 250168 250170 250176 250180 250186 250194 266669
A. | 3 | B. | 4 | C. | 5 | D. | 6 |