皮皮学,免费搜题
登录
搜题
【简答题】
Basic Table Manners Good basic table manners are important because they ensure that both guests and hosts are comfortable at the table. Table manners are mostly common sense. Following these will carry you through most common situations from formal dinners to a night of poker with the guys. Sit up straight. Try not to slouch or lean back in your chair (even if you are playing cards and don’t want your opponents to see your hand). Don’t speak with your mouth full of food. Sure, you’ve heard your mother say it a hundred times, but no one likes to see a ball of masticated meat in your mouth. If you feel you must speak immediately, if you have only a relatively small bite, tuck it into your cheek with your tongue and speak briefly. Chew quietly, and try not to slurp. This is corollary of rule number 2. Making noises is not only unappetizing, and distracting, but it can also interrupt the flow of conversation. Keep bites small. In order to facilitate the above rules it is smart to keep bite sizes to a moderate forkful. Cut meat and salad so that it doesn’t hang from your mouth after you shovel it in. Don’t cut all of your meat at one time, this tends to remind people of feeding small children and the messiness associated with activity. Eat at a leisurely pace. This rule, besides being good for the digestion, also shows your host that you want to enjoy the food and the company. Eating quickly is a sign of disrespect for the host, as it shows that your focus is on the food and that you would rather be at home watching the grass grow than passing time with your host. Keep your elbows off the table. You have also heard this one from your mother, ad infinitum, but in close dining situations it is a vital rule. Elbows take up table space and can be a danger in knocking plates or glasses. Elbows on the table give you something to lean on and tend to lull you into slouching. If you must lean on the table a good tactic is to take a roll or piece of bread into your free hand and rest part of your forearm on the table. Don’t reach. You don’t want to get in the way of people either eating or talking. Not only is it as impolite as standing in front of a TV with other people behind you, but there is always the possibility of upsetting glasses or running your sleeve through someone’s mashed potatoes. Wipe your mouth before drinking. Ever notice that disgusting smudge on the edge of your wine glass? This can be avoided by first wiping your lips with your napkin.
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
.
..
皮皮学刷刷变学霸
举一反三
【单选题】原理为氢键吸附的色谱是
A.
离子交换色谱
B.
凝胶滤过色谱
C.
聚酰胺色谱
D.
硅胶色谱
E.
氧化铝色谱
【单选题】属于玻璃中间体氧化物的是( )
A.
Al2O3
B.
BeO
C.
PbO
D.
P2O5
【单选题】关于空调制冷循环原理,以下描述正确的是
A.
液态制冷剂经过节流后,其压力急剧下降,沸点则升高
B.
进入冷凝器的制冷剂吸收外界的热量,变为气态的制冷剂
C.
气态制冷剂被压缩后,形成过热气体,所含的热量不会改变
D.
制冷剂的冷凝过程也就是凝结潜热的释放过程
【简答题】( 1 )现在很多家庭自备干粉灭火器,其中一种灭火器是利用压缩的二氧化碳吹干粉(干粉的主要成分是磷酸二氢铵)灭火。 1 灭火器中的二氧化碳可利用空气中含量最多的气体来代替,该气体是 (填化学式)。 2 钢是铁的合金,属于 (填“金属材料”或“合成材料”)。 3 磷酸二氢铵( NH 4 H 2 PO 4 )受热分解生成磷酸( H 3 PO 4 )和氨气,并吸收大量的热,并能在可燃物表面形成一层玻璃状...
【单选题】原理为氢键吸附的色谱是
A.
离子交换色谱
B.
凝胶过滤色谱
C.
聚酰胺色谱
D.
硅胶色谱
E.
氧化铝色谱
【单选题】原理为氢键吸附的色谱是
A.
凝胶滤过色谱
B.
聚酰胺色谱
C.
硅胶色谱
D.
离子交换色谱
E.
氧化铝色谱
【简答题】(10分)如图所示的是物质A~G相互间的关系(“→”表示物质间存在的转化关系,“—”表示两端的物质能发生化学反应)A、F都是单质;F是使用最多的金属材料; B是导致温室效应的主要气体;在工业上,C广泛用于玻璃、造纸、纺织和洗涤剂的生产等;E是一种蓝色溶液.请回答: (1)C的化学式 (2)写出E的一种用途 . (3)①、写出标号①的化学反应方程式: . ②、反应②的基本反应类型是 . (4)以上7...
【单选题】原理为氢键吸附的色谱是
A.
氧化铝色谱
B.
凝胶滤过色谱
C.
聚酰胺色谱
D.
硅胶色谱
E.
离子交换色谱
【单选题】关于空调制冷循环原理,以下描述正确的是:
A.
液态制冷剂经过节流后,其压力急剧下降,沸点则升高
B.
进入冷凝器的制冷剂吸收外界的热量,变为气态的制冷剂
C.
气态制冷剂被压缩后,形成过热气体,沸点降低
D.
制冷剂的冷凝过程是热量的释放过程
【简答题】(12分)请用化学(或离子)方程式解释以下事实或原理: (1)盛装NaOH溶液的试剂瓶不能用磨口玻璃塞:__________________________。 (2)氢氧化铝Al(OH) 3 是一种治疗胃酸(含盐酸)过多的药物,请用离子方程式表示该反应原理: 。 (3)铝在空气中会被氧化生成一层致密的氧化膜(氧化物)而对铝起保护作用,但这层氧化膜(氧化物)遇到强酸或强碱都会溶解,请写出: 该氧化物...
相关题目: