几个光源同时照射到被照面时，其上的照度为单个光源分别存在时形成的照度的代数和；而几个

若需电焊、气割、烘烤等明火作业，必须经消防部门批准，方可动火。

Coming to another country to study requires a big adjustment and it usually takes a while to________. [ ] 

A. fit in    

B. calm down

C. keep up    

D. get away

A	B

（1）上面哪个图是香港 * * 交接仪式图？哪一个是澳门 * * 交接仪式图？你判断的依据是什么？                                                                                                                                                              （2）两图交接仪式中都有我国哪位重要领导人主持参加？                                                                                                                                                                （3）两个地方分别被哪国占领？各是何时被侵占的？占多长时间？                                                                                                                                                                （4）两个 * * 回归通过什么声明？回归有什么巨大意义？                                                                                                                                                                                                                                                                                                                                

温度高于56℃时，可导致抗原抗体变性。

男，48岁。呕血5小时入院。查体：P120次／分，BP80/55mmHg。神志不清，营养状况差。巩膜明显黄染，腹壁可见静脉曲张，肝肋下可触及，质地较硬，边缘较钝，脾肋下6cm，移动性浊音阳性，肠鸣音弱。

此时不宜采取的处理措施是（）

A.快速输血、输液

B.急症手术

C.静脉注射垂体后叶素

D.内镜下止血治疗

E.试用三腔管压迫止血