贝诺酯是阿司匹林与乙酰氨基酚的拼合,这种修饰方法是A.成酰胺修饰B.成酯修饰C.成盐

题型:单项选择题

问题:

贝诺酯是阿司匹林与乙酰氨基酚的拼合,这种修饰方法是

A.成酰胺修饰
B.成酯修饰
C.成盐修饰
D.其他修饰
E.拼合修饰

考点:西药执业药师药物化学药物的化学结构修饰
题型:单项选择题

设函数f(x)=-x(x-a)2(x∈R),其中a∈R 。

(1)当a=1时,求曲线y=f(x)在点(2,f(2))处的切线方程;

(2)当a≠0时,求函数f(x)的极大值和极小值。

题型:单项选择题

患者男,56岁,缺失,余留牙正常,右侧牙槽嵴丰满,左侧牙槽嵴低平,口底和前庭沟浅

的卡环设计最好采用()

A.RPI卡环组

B.RPA卡环组

C.对半卡环

D.三臂卡环

E.间隙卡环

题型:单项选择题

David Stern is glad to see Houston Rockets all-star center Yao Ming return, saying it’s important to the NBA, the Rockets and China. “China is an important market for us. People __ 小题1:_____ when Yao’s on court. So we are looking forward to having him back next season.” Stern said.

When asked how it would be different after Yao retires, Stern said, “After he retires, we hope that we can continue to work with him. He may become the Chinese ambassador(大使)because he __小题2:____ here .”

Yao’s role has already started to change. He became the owner of his home team, the Shanghai Sharks. Stern said, “To be a boss of a team is a hard job, but I believe Yao Ming can __小题3:_____. ” “I think he didn’t have any experience in having a team. He will face lots of difficulties to run a team,” he said. “But I think he is so smart that he can make it.”

题型:单项选择题

流量计前后压力表的压差大则说明()。

A、流量计前过滤器堵

B、流量大

C、流量小

题型:单项选择题

在公开查缉工作中应如何做到“三定”、“三不定”?

更多题库