某种利胆解痉药的有效成分是亮菌甲素,结构简式如图。关于亮菌甲素的说法正确的是(

题型:选择题

问题:

某种利胆解痉药的有效成分是亮菌甲素,结构简式如图。关于亮菌甲素的说法正确的是(   )

A.亮菌甲素的分子式为C12H12O5

B.1mol亮菌甲素最多能和4 molH2发生加成反应

C.1mol亮菌甲素最多能和2 molNaOH反应

D.亮菌甲素在一定条件下可以与乙酸发生酯化反应

考点:加聚反应基元反应、非基元反应磺化反应缩聚反应
题型:选择题

能正确表示下列反应的离子方程式为                  (   )

A.少量SO2通入苯酚钠溶液中(酸性:H2SO3>HSO3->苯酚):SO2+H2O+C6H5O=C6H5OH+HSO3

B.将Na2O2固体投入H218O中:2Na2O2+2H218O=4Na+4OH18O2

C.向溴化亚铁溶液中通入过量氯气:Fe2+ + 2Br + 2Cl2 ="=" Fe3+ + Br2 + 4Cl

D.向NH4Al(SO42溶液中滴入Ba(OH)2溶液,恰好使SO完全沉淀:NH+Al3+2SO+2Ba2+4OH= Al(OH)3↓+NH3·H2O+2BaSO4

题型:选择题

下列关于鼻瓣区的叙述哪一个是错误的()

A.鼻瓣区的位置固定不变

B.鼻瓣区包括鼻中隔软骨前下端

C.鼻瓣区包括鼻外侧软骨前端

D.鼻瓣区包括鼻腔最前端的梨状孔底部

E.鼻瓣区包括下鼻甲前端

题型:选择题

男,35岁,IDDM10年,一直早晨注射60UNPH胰岛素。近来他监测血糖发现餐前及睡前血糖大多是11.2mmol/L(200mg/dl),过去未曾发现低血糖发作,体重70kg,下列最适宜的治疗是早饭前午餐前晚餐前()。

A.26NPH+14Reg10NPH+10Reg

B.20WPH+10Reg20WPH+10Reg

C.18NPH+7Reg5NPH+5Reg

D.40Ultralente+4Reg8Reg8Reg

E.20Ultralente+4Reg8Reg20U1tralente+8Reg

题型:选择题

There are many stereotypes( 定型 ) about the character of people in various parts of the United States. In the Northeast and Midwest, people are said to be closed and private. In the South and West, however, they are often thought of as being more open and hospitable . Ask someone from St. Louis where the nearest sandwich shop is, and he or she will politely give you directions. A New Yorker might eye you at first and after deciding it is safe to talk to you, might give you a rather unexpected explanation. A person from Georgia might be very kind about directing you and even suggest some different places to eat. A Texan just might take you to the place and treat you to lunch.

American stereotypes are abundant. New Englanders are often thought of as being friendly and helpful. Southerners are known for their hospitality and warmth. People from the western part of the United States are often considered very outgoing. These differences in character can be traced to different factors such as climate, living conditions, and historical development.

When travelling from place to place, Americans themselves are often surprised at the differing degrees of friendliness in the United States.

1 . The main idea of the passage is _____________.

A. even Americans are surprised at the differences among themselves

B. there are many differences in character in different parts of the USA.

C. there are many reasons for the differences

D. stereotypes about people are not necessarily true

2. Which of the following is true according to the passage?

A. New Yorkers are usually open with strangers.

B. People from the South are usually considered good

C. The friendliest Americans travel from place to place.

D. Different parts have different customs and habits.

3. The differences lie in the following except ______ of the parts.

A. the weather    B. the history    C. geography    D. the names

4 . The word "abundant" in the second paragraph may probably mean _________.

A. plentiful        B. normal      C. curious       D. strange

题型:选择题

最常用的职业病调查统计方法是()。

A.普查

B.重点调查

C.抽样调查

D.典型调查

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