根据围岩松动圈的大小,围岩可划分为几类?这种分级法有何优点?

题型:问答题 简答题

问题:

根据围岩松动圈的大小,围岩可划分为几类?这种分级法有何优点?

考点:井巷工程井巷工程题库
题型:问答题 简答题

信息匹配。

在第1-5题中,Ray, Phil and Adam等人都想去旅游。阅读下面对不同的旅游活动的介绍,

选出符合他们要求的最佳选项,选项中有一个是多余选项。

     The people below all want to go on a short trip and there are descriptions of six trips which a ferry

company is offering. 

       1   .Ray and three of his friends would like to spend a whole weekend driving around in nice scenery and

enjoying some local food.

         2   .Phil and Adam want to go on a comfortable trip which takes them quickly to an interesting city.

Then they want to enjoy at least two days of sightseeing.

        3    . Mike, Kathy and their three children don' t have much money, but they want a special day out this

Saturday. They must be back home by 9 p. m.. 

        4   . Kirsten is a Dutch student who is studying in Scotland. She doesn' t drive, but wants a day trip to

see some beautiful scenery and spend a little time by the sea. 

        5    . Clare and Robert want to enjoy some good food, but would also like to give their two young

children a day to remember. They don't mind if they spend a lot of money.

A

     Marine Life, France

      The chance to experience the oceans of the world. Children will love the observatory (天文台 ),with

water all around them and big fish swimming above their heads! Afterwards you eat at a world-famous local

restaurant before boarding the ferry at 9 p. m. Not cheap, but a great day out!

B

     Amsterdam

     Sail out in the evening and enjoy over 12 hours in the Netherlands, returning the following night. After a

good Dutch breakfast you travel by train direct to the heart of the wonderful city of Amsterdam. The

sightseeing and places to shop will make this a day to remember. Weekends only.

C

     Ireland by Car

     Once you arrive in Ireland you' re quickly on beautiful country roads, with friendly villages where you can

stop for a delicious bite to eat. The special price allows you to take your car and up to five people away for 48

hours, and two night' s hotel accommodation(住宿) can be arranged for a little extra.

D

      French Hypermarket Day Trip

     Whether you want to buy or just look, you'll love this tour. The large Darney shopping center is a

shopper' s dream! You will find a great number of local goods on sale, and clothes and kitchen goods are

excellent value. Free children' s entertainment all day. Leaves 10:OO,back at 19:00.

E

     Belgium by Hydrofoil

     A four-day trip. From England you cross to Belgium in just 100 minutes by hydrofoil! You are served food

and drinks during the crossing, then continue your journey to Brussels, or another beautiful city, on the fast

Belgian railway network. 

F

     Sea and Mountains in Northern Ireland

     Explore the Northern Ireland countryside, including the amazing Mountains of Mourne and the small

seaside holiday town of Newcastle. The ferry leaves the port in Scotland at 7:30 and arrives back at 22:20.

Transport in Northern Ireland is by air-conditioned coach.

题型:问答题 简答题

在用稀盐酸和氢氧化钠溶液研究中和反应实验时,某化学兴趣小组认真观察、详实记录,进行了一些探究活动.请完成下列问题:

(1)小明同学利用“pH计”测定并绘制了溶液的酸碱度变化如图所示.

①化学方程式为______.

②根据图示可知:小明的实验是用胶头滴管逐滴将______(选填“稀盐酸”或“氢氧化钠溶液”)滴加到另一种溶液中至过量.

③在加入溶液的质量至5g时,所得溶液中溶质的化学式为______.

(2)在实验进行几秒钟之后,细心的小华同学发现溶液中有少量气泡冒出.经过小组讨论,他们一致认为NaOH溶液在空气中变质了,依据是______.

为此,他们还进一步设计了两个检验NaOH溶液是否变质的实验方案来重复验证:

方案一:取少量溶液样品,滴入Ca(OH)2溶液,若有白色沉淀生成,则证明NaOH溶液变质了.

方案二:取一定量溶液样品,滴加适量酚酞溶液,若溶液仍为无色,则证明NaOH溶液变质了.

你不同意上述两个实验方案中的哪一个?简述你的理由______.

题型:问答题 简答题

剩余法不适用于评估( )。

A.地上有写字楼的土地价格
B.现有新旧房地产中的土地价格
C.具有潜在开发价值的土地价格
D.不具有潜在开发价值的土地价格

题型:问答题 简答题

简述过饱和溶液形成的方法?

题型:问答题 简答题

颅内肿瘤患者的最常见的共有表现是

A.意识障碍

B.癫痫

C.颅内压增高

D.运动障碍

E.视力障碍

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