问题
单项选择题
中度一氧化碳中毒血中COHb的含量为
A．＜20%
B．20%～30%
C．30%～50%
D．＞50%
E．COHb含量不代表中毒程度
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
中度一氧化碳中毒血中COHb的含量为
A．＜20%
B．20%～30%
C．30%～50%
D．＞50%
E．COHb含量不代表中毒程度
参考答案：C
| 选择适当的介词填空。 | |
2. Li Ming goes to the park Sundays. 3. I have supper my friend. 4. Stand the right answer. 5. I go to bed the evening. 6. January is a month the year. 7. He draws a picture the paper. 8. Danny is front of Steven. 9. He is writing the chalk. 10. Are you ready the class? |