某黏性土层上的桥墩基底局部出现负l2厘米超挖,修整时正确的做法是向基底填入( ),顶

题型:单项选择题

问题:

某黏性土层上的桥墩基底局部出现负l2厘米超挖,修整时正确的做法是向基底填入( ),顶面不得高于基底设计高程。

A.片石

B.碎石

C.纤维混凝土

D.粘土

考点:一级建造师铁路工程一级建造师铁路工程管理与实务真题2006年
题型:单项选择题

如果a和b成反比例,b和c成反比例,那么a和c成______比例.

题型:单项选择题

维生素D缺乏性佝偻病活动早期的临床表现是( )

A.神经、精神症状
B.全身肌肉松弛
C.腕踝畸形
D.出牙延迟
E.颅骨软化

题型:单项选择题

如图所示的轻质杠杆,AO小于BO。在A,B两靖悬挂重物G1和G2后杠杆平衡。若将G1和G2同时向支点O移动相同的距离,则

[ ]

A.杠杆仍保持平衡

B.杠杆的A端向下倾斜

C.杠杆的B端向下倾斜

D.无法判断

题型:单项选择题

写作。

  根据短文内容,从短文后的选项中选出能填入空白处的最佳选项.选项中有两项为

多余选项。

                 Easy Ways to Boost(改善)Your Mood

_______1_______. Taking an extra moment for yourself will make your day brighter and give

you a healthier outlook on life. Here are some simple ways you can bring a little happiness into

your life right now:

1. Go for a walk.

Grab your dog, best friend, or your significant other and head out on a brisk(轻快的) walk. Just a

little bit of exercise can boost your mood and give you a fresh perspective on problems that have

been bothering you. Think walks are boring? ________2_______. Take a trip to the mall, or

even walk to get some frozen yogurt. Make it a fun trip and you'll surely make it part of your routine.

2.________3________.

After all, laughter is the best medicine. Pick up something that makes you laugh like a funny picture

, book, magazine, or a DVD of your favorite comedy. _______4______. Giving yourself time to

laugh boosts feel-good endorphins(胺多酚).

3. ________5________ .

Take a photo of yourself doing something you enjoy, like roller skating, skiing, swimming, playing

an instrument, or being with friends and family. Place the picture on your desk to remind yourself

that you lead an amazing life and have lots to be happy about.

 A. Model behavior

 B. Try walking to a place that seems exciting to you

 C. Ten minutes of relaxation can do wonders

 D. Even the most optimistic people can use a mood boost every once in a while

 E. Tell someone that you're guaranteed to brighten their day

 F. You could even plan a date night out to a comedy club

 G. Buy something silly

题型:单项选择题

下列关于磁粉探伤的叙述,正确的是()

A、切断磁化电流后施加磁悬液的方法叫作剩磁法

B、高矫顽力材料制成的零件可以用剩磁法探伤

C、荧光磁粉与非荧光磁粉相比,一般说前者的磁悬液浓度要低

D、以上都对

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