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【单选题】
放射免疫分析标准曲线的制作中，半对数坐标系制图法获得的标准曲线特点是（）A.
呈直线
B.
标准曲线呈“S”形
C.
呈弧线
D.
正相关直线
E.
负相关直线
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】A few years I was on a bicycle trip when I got off my bike for a rest. I sat down on the grass. A few seconds later, I was covered in ants. They were swarming all over me so I got up and brushed them ...
【多选题】配制盐酸肾上腺素注射液为防止氧化应采取的措施有 ( )
A.
充入惰性气体
B.
加入焦亚硫酸钠
C.
加入DETA-2Na
D.
控制pH2.5~5.0
E.
100℃流通蒸汽灭菌15分钟
【简答题】A few years ago I was on a bicycle trip when I got off my bike for a rest. I sat down on the grass. A few seconds later, I was covered in ants. They were swarming all over me so I got up and brushed t...
【多选题】当用户忘记BIOS系统管理员密码后,可采取的措施是()。
A.
其余办法均可行
B.
用CMOS跳线帽短接[2-3]根铜针约5-10秒后，再短接[1-2]根铜针
C.
重新安装操作系统
D.
拔掉CMOS电池，等几分钟再打开
【多选题】当用户忘记BIOS系统管理员密码后,可采取的措施是()。
A.
拔掉CMOS电池，过几分钟再安回；
B.
重新安装操作系统；
C.
用CMOS跳线帽短接2-3根针脚约5-10秒后，再短接1-2根针脚；
D.
以上方法均可行。
【单选题】Contrary to my expectations, the experiment ended ________ failure.
A.
at
B.
to
C.
in
D.
till
【多选题】当用户忘记BIOS系统管理员密码后,可采取的措施是()。
A.
重新安装操作系统
B.
拔掉CMOS电池，等几分钟再打开
C.
用CMOS跳线帽短接[2-3]根铜针约5-10秒后，再短接[1-2]根铜针
D.
其余办法均可行
【单选题】The plane_______ when we got to the airport [ ]
A.
had taken off
B.
was taken off
C.
will take off
D.
is taking off
【简答题】(2013·高考重庆卷)When I was little，my mother used to sit by my bed，________me stories till I fell asleep. A．having told B．telling C．told D．to tell
【单选题】(2013·重庆高考)When I was little, my mother used to sit by my bed, ________ me stories till I fell asleep.
A.
having told
B.
telling
C.
told
D.
to tell
相关题目：
【多选题】配制盐酸肾上腺素注射液为防止氧化应采取的措施有 ( )
A.
充入惰性气体
B.
加入焦亚硫酸钠
C.
加入DETA-2Na
D.
控制pH2.5~5.0
E.
100℃流通蒸汽灭菌15分钟