题干

实验室做化学实验,发生下列事故,处理方法不正确的是

A:金属钠着火,用沙子或土盖灭

B:实验台上的酒精灯碰翻着火,立即用湿抹布扑灭

C:皮肤溅上浓H2SO4,立即用大量水冲洗

D:汞洒落地面,应立即撒上一层硫黄粉

上一题 下一题 0.0难度 选择题 更新时间:2017-12-25 05:02:33

答案(点此获取答案解析)

C

同类题2

阅读理解

Dogs Don't Tell Jokes-By Louis Sachar

Twelve-year-old Gary Boone knows he was born to be a comedian. He never stops joking, regardless of the fact that nobody laughs much and his classmates think he is stupid. Therefore he had no real friends at school. Due to being laughed at by his classmates, Gary Boone thought winning the school talent show would be his dream of proving himself to be a real comedian, but on the big night his dream went wrong with funny results.

Winners Never Quit-By Mia Hamm

Mia Hamm, American soccer champion, tells a true-to-life inspiring story of learning that winning and losing aren't as important as being part of a team. More than anyone, soccer superstar Mia Hamm knows the value of teamwork. She shares this lesson, paired with energetic pictures by Carol Thompson, and this story is perfect for soccer kids and their soccer moms.

Shackleton's Incredible Voyage-By Alfred Lansing

The astonishing adventure of polar explorer Ernest Shackleton's survival for over a year on the ice-bound Antarctic seas, as Time t magazine put it, "defined heroism". To write the authoritative story, Lansing consulted with ten of the surviving members and gained access to diaries and personal accounts by eight others. The book has a first-hand account, expanded with maps and illustrations especially for this edition.

The Alchemist-By Paulo Coelho

The Alchemist, by Paulo Coelho, continues to change the lives of its readers forever. It tells the magical story of Santiago, an Andulusian shepherd-boy(牧童) who desires to travel in search of treasure. The story of the treasures Santiago finds along the way teaches us about the essential wisdom of listening to our hearts and above all, following our dreams.