磨砂玻璃或花纹玻璃在清洁保养时只能用柔软的干抹布擦拭,如果有油污可以用()擦拭即可。

题型:单项选择题

问题:

磨砂玻璃或花纹玻璃在清洁保养时只能用柔软的干抹布擦拭,如果有油污可以用()擦拭即可。

A.牙膏

B.酒精

C.去污膏

D.报纸

考点:客房服务员初级客房服务员初级客房服务员题库
题型:单项选择题

Almost every Chinese person can recite(背诵) the two lines of the famous poem, “Every grain on the plate comes from hard work ”. But sadly, many of us don’t actually get the real meaning of these lines: Don’t waste food.

A CCTV program reported that the food Chinese people throw away every year is enough to feed 200 million people for a year. Do we have too much food? Absolutely not. According to the UN World Food Program, there were 925 million hungry people around the world in 2011, especially in developing countries. Six million children die of hunger every year.

Chinese people are well-known for being friendly and generous. Many even feel that they lose face if their guests have eaten all the food on the table. Luckily, a number of people have realized the importance of saving food. What should we do in our daily lives to waste less food?

1. Don’t order too much in a restaurant. Only order as much as you want to eat. If you cannot eat all the food you ordered, take the rest of it home.

2. Don’t leave any food in your bowls while having meals.

3. Keep an eye on what food you have at home. Don’t buy too much, especially for vegetables and fruit.

小题1:What’s the real meaning of the underlined sentence?

A.春种一粒粟,秋收万颗籽

B.谁知盘中餐,粒粒皆辛苦。

C.吏禄三百石,岁晏有余粮

D.足蒸暑土气,背灼炎天光。小题2:According to the UN report, how many hungry people were there in 2011?

A.6 million.

B.925 million.

C.200 million.

D.725 million.小题3:What should we do to waste less food?

A.Order more food in a restaurant.

B.Every time you eat, leave some food in your bowls.

C.Take all the food you ordered home.

D.Don’t store too much food like vegetables and fruit.小题4:Which of the following is NOT true?

A.A number of people have realized the importance of saving food.

B.The food Chinese people throw away every year is enough to feed 200 million people for a year.

C.200 million children die of hunger every year.

D.Many Chinese feel that they lose face if guests have eaten all the food on the table.小题5:What’s the main idea of this passage?

A.Don’t waste food.

B.Chinese people are friendly and generous.

C.We can’t die of hunger.

D.Every grain is grown by farmers.

题型:单项选择题

患者,男,42岁。急性肾功能衰竭,经治疗后进入恢复期,症见腰膝竣软,乏力气促,手足心热,口干喜饮,舌略红苔薄少津,脉沉细数。治疗应首选()。

A.生脉散

B.六味地黄汤

C.无比山药丸

D.参芪麦味地黄汤

E.知柏地黄汤

题型:单项选择题

医生有时要对发高烧的病人作“冷敷”治疗,即用胶袋装着温度很低的物体对病人进行冷敷降温.现有0℃的水和0℃的冰供选择,你选______,你的依据是______.

题型:单项选择题

在 Visual FoxPro 中,以下有关 SQL 的 SELECT 语句的叙述中,错误的是______。

A.SELECT 子句中可以包含表中的列和表达式

B.SELECT 子句中可以使用别名

C.SELECT 子句规定了结果集中的列顺序

D.SELECT 子句中列的顺序应该与表中列的顺序一致

题型:单项选择题

丙烷在燃烧时能放出大量的热,它也是液化石油气的主要成分,作为能源应用于人们的日常生产和生活.

已知:①2C3H8(g)+7O2(g)═6CO(g)+8H2O (l)△H1=-2741.8kJ/mol

      ②2CO (g)+O2(g)═2CO2(g)△H2=-566kJ/mol

(1)反应C3H8(g)+5O2(g)═3CO2(g)+4H2O (l) 的△H=______.

(2)现有1mol C3H8在不足量的氧气里燃烧,生成1mol CO和2mol CO2以及气态水,将所有的产物通入一个固定体积为1L的密闭容器中,在一定条件下发生如下可逆反应:CO(g)+H2O (g)⇌CO2(g)+H2(g)△H=+41.2kJ/mol

①下列事实能说明该反应达到平衡的是______.

a.体系中的压强不发生变化

b.v (H2)=v (CO)

c.混合气体的平均相对分子质量不发生变化

d.CO2的浓度不再发生变化

②5min后体系达到平衡,经测定,H2为0.8mol,则v(H2)=______.

③向平衡体系中充入少量CO则平衡常数______(填“增大”、“减小”或“不变”).

(3)依据(1)中的反应可以设计一种新型燃料电池,一极通入空气,另一极通入丙烷气体;燃料电池内部是熔融的掺杂着氧化钇(Y2O3)的氧化锆(ZrO2)晶体,在其内部可以传导O2-.在电池内部O2-由______极移向______极(填“正”或“负”);电池的负极电极反应式为______.

(4)用上述燃料电池和惰性电极电解足量Mg(NO32和NaCl的混合溶液.电解开始后阴极的现象为______.

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