[多选题] 易燃、有毒气体泄漏现场的战斗展开()
A. 消防车应停放在灾害现场上风或侧上风处,并能随时进攻或撤离。
B. 消防人员在战斗展开前要做好安全防护,携带相应的检测仪器,边检测,边接近泄漏源
C. 有可能发生爆燃的易燃气体泄漏现场,在未控制着火源的情况下,不能盲目战斗展开
D. 消防人员必须做好防中毒的安全防护后才能进入有毒区域

It’s well known that people in the west are very loud of pets. Almost every family has a pet. Just about every pet owner has a story about his pets and is eager to share it with anyone who will listen. So it is not a very difficult task for all kinds of newspapers to offer readers many stories about animals. Here is one:
One morning last summer Mrs. Andrews mode some sausage - sandwiches for her husband’s lunch. There was one sausage left over. Mrs. Andrews didn’t care for sausages herself, and so she gave the last one to Henry, their little dog that was deeply loved by both off them and has lived with them for many years. Henry ate it up quickly.
During the morning the dog got ill. He would not stop shaking his head, refuse to eat anything and what’s more, he couldn’t stand up properly. Mrs. Andrews thought, "He’s eaten something that didn’t agree with him. Maybe that sausage was bad, ... " She suddenly
A. because he didn’t go to the doctor.
B. because he had had some medicine which made him sick.
C. because he was really ill after eating two sausages.
D. because the dog was to die.