皮皮学，免费搜题
登录
搜题
【单选题】
正常情况下血液中可刺激呼吸中枢,发出呼吸冲动的主要物质是A.
二氧化碳。
B.
氧
C.
一氧化碳。
D.
碳酸氢根。
E.
酸碱度。
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】Do you know me? My name is May. Do you have any rules in your school? There are many rules in my school. Let me tell you some of them. We have to wear uniforms every day. I don’t think this rule is go...
【单选题】一氧化碳中毒根据雪中的COHb浓度分型,中度一氧化碳中毒患者的COHb的浓度为
A.
10%～20%
B.
20%～30%
C.
30%～40%
D.
50%～60%
E.
60%～70%
【简答题】The following sentences are about negotiating the prices. Read them and put them in the right column. I’m sure the prices we quoted are reasonable. I’m not sure I agree with you there. Your ...
【简答题】阅读下面短文，掌握其大意，然后从36-45各题所给的A、B、C、D四个选项中，选出一个最佳答案。 I don’t think there is any one being as interested in food as I. We lived on a farm in Lincolnshire and had a good 36 . She made fantastic English food...
【单选题】--- Mrs. Brown, I don’t think we can get there on time by bike. --- You mean it’s ___________ for us to take a taxi?
A.
necessary
B.
important
C.
possible
D.
difficult
【单选题】Decide whether each of the following statement is acceptable as request in a business letter. Last summer, my husband and I went to the north of your country. We enjoyed the cool weather and had a goo...
A.
Acceptable
B.
Unacceptable
相关题目：