原型化方法是对预先定义方法的补充，它的提出基于若干前提和条件，下述哪个不在这些前提和

点P（-4，3）先向上平移2个单位，再向右平移4个单位，所得到的点P₁的坐标为______．

阅读理解。

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 behaviorB. 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

[案例2]

某市一居民楼，全现浇钢筋混凝土结构，正处于主体施工阶段，一钢筋工徐某在10楼绑扎钢筋，不慎滑倒，由管道井口坠落到6层楼面，经抢救无效死亡，事后事故调查发现，事故发生时，管道井口没有按照规定进行防护，而只是盖了块镀锌薄钢板，徐某跌至盖板上后，薄钢板迅速变形塌落，徐某随塌落的钢板坠下。

问题：

（1）混凝土浇筑施工的安全措施有哪些？

（2）这是一起由于洞口防护不到位所引起的伤亡事故，请指出“三宝”、“四口”和“十临边”是指哪些部位？

（3）施工安全控制的基本要求是什么？

（4）施工安全技术措施包括哪些方面的内容？

男，40岁，黄疸，肝脾肿大半年，进食时突然呕吐暗红色液体300ml，其病因可能为（）。

A．食管静脉曲张破裂 

B．食管贲门黏膜撕裂综合征 

C．食管癌 

D．急性胃黏膜损伤 

E．胃体上部溃疡

无功功率的定义式为（）

A.Q=UI

B.Q=UIcosφ

C.Q=UIsinφ

D.Q=ui