皮皮学，免费搜题
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【单选题】
关于静脉注射,错误的操作是A.
严格无菌操作
B.
抽吸药液 , 排尽空气
C.
针头与皮肤呈6 0° 角进针
D.
见回血松止血带，药
E.
药液不可溢出血管外
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反馈参考答案：
举一反三
【单选题】Which of the following should a person do to protect their personal information?
A.
Avoid using special characters in passwords.
B.
Do not provide information to people who contact you by e-mail.
C.
Avoid providing answers that are hard to guess as responses to security questions.
D.
Do not enter those Web sites where https:// appears in the Web browser.
【简答题】习题2-7习题 :3题,6题,13题.
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