从总蒽醌中分出含一个-COOH的蒽醌,可选用()A.5%Na2CO3溶液 B.5%N

题型:单项选择题

问题:

从总蒽醌中分出含一个-COOH的蒽醌,可选用()

A.5%Na2CO3溶液

B.5%NaHCO溶液

C.0.5%NaOH溶液

D.热5%NaHCO3溶液

E.4%NaOH溶液

考点:执业中药师中药化学成分与药效物质基础中药化学成分与药效物质基础题库
题型:单项选择题

缺词填空。

      先通读下面的短文,掌握其大意,然后根据短文内容和所给首字母,在空格内填入一个适当的词,

使短文意思完整。所填单词必须完整写出。

     Advertisements are an important p__________(1) of our lives. We are so u___________(2) to them that

we don't even r_____________(3) how many we see and hear in a day. I did some r________ (4) on

advertisements. There are two main types of advertisements---commercial (商业) advertisements and public

service advertisements (PSAs). A commercial advertisement is one which someone has p_________(5) for to

promote (推销) a product or service. PSAs are often placed for f____________(6). They p__________ (7)

information with attractive images and creative language, but they are made to serve the public. PSAs are meant

to teach us and help us l (8)better lives. Since 1996, a number of PSAs have a______________(9) around

China. You have probably seen or heard some of them yourself, l__________ (10) ' Yes to life, no to drugs

(毒品)' and 'Knowledge changes life.' These ads d__________ (11) with social problems. There are also PSAs

about public service project, such as ' Project Hope - schooling every child.' All the ads are helpful, and you

can often learn a lot by f__________ (12) the advice they give.

题型:单项选择题

MAY 14 marks the 60th anniversary of the founding of the state of Israel(以色列). Many Israelis, however, are not in the mood to celebrate.

Looking at the damage to her neighbor's home from a Palestinian(巴勒斯坦) rocket, Batia Katar, a 17-year-old Israeli girl, was in tears. "We can't celebrate (Israel's) independence when things like this are happening," she said.

What is clear is that Israel is not a normal country. The country has a dramatic (戏剧性) history and ancient culture but has only officially existed for 60 years. Within hours after it was established in 1948, Israel was at war with its Arab neighbors for land. It won that time, and in 1956, 1967 and 1973, acquiring the West Bank, the Golan Heights, Gaza and east Jerusalem. For good or ill, Israelis can take pride in victories with so many countries. However, it occupied much more land than the United Nations agreed, which left local Palestinians homeless.

Different from all its neighbors in religion, Israel is also far more successful economically than its neighbors. Though, it gets a great amount of support from America and other Western countries. The country is now a world leader in many industries, such as IT and modern agriculture.

However, conflict exists, just like 60 years ago. And the signal of peace is as weak as ever. Palestinian militants (武装人员) have fired more than 7,000 missiles  from Gaza, mainly at Sedro, killing 13 people. In the same period hundreds of Palestinian civilians  in Gaza have died in Israeli military action.

In order to create peace, the world community hopes both sides accept and follow the Middle East peace plan. Optimists believe through Israeli-Palestinian negotiations there will finally be peace.

Both Israelis and Palestinians want to live in peace without explosions that remind them that they are living in a special but dangerous place.

小题1:  Why are many Israelis not in the mood to celebrate the both anniversary of the founding of the state of Israel? Because         .

A.the government didn't organize it

B.they are too busy to attend it

C.it is dangerous to celebrate it

D.conflicts and fights still exist小题2:  The underlined word established in the fourth paragraph means         .

A.defeated

B.founded

C.attacked

D.accepted小题3:  Israel is not a normal country because         .

A.the country has a dramatic history and ancient culture but has only officially existed for 60 years

B.within hours after its establishment, Israel was at war with its Arab neighbors for land

C.it occupied much more land than the UN agreed, which left local Palestinians homeless

D.all of the above小题4:  Which statement about Israel is NOT true according to the passage?

A.It became a country in 1948.

B.It is different from all its neighbors in religion.

C.It is now a world leader in many industries, such as IT and modern agriculture.

D.No country has supported it since it was founded.小题5:  It can be inferred from the passage that         .

A.it is still a question mark whether Israelis and Palestinians can live in peace

B.Israel was created as a homeland for homeless Jews

C.for good or ill, Israelis can take pride in victories with so many countries

D.Israel is far more successful economically than its neighbors

题型:单项选择题

当柴油机突然熄火的同时,排气管突然冒黑烟;若是机械损坏事故,伴有破坏性异响。摇车困难、阻力很大或根本不能转动,则说明故障产生在()。

A.燃油供给系统

B.配气机构

C.曲柄连杆机构

D.以上都不是

题型:单项选择题

中国工商银行和交通银行尚未上市。( )

题型:单项选择题

调速系统中调节部分包括那些部套?

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