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【单选题】
在高效液相色谱仪手动进样操作中,错误的操作是A.
配制好供试品溶液后，必须用0.45μm滤膜过滤，并排气泡后样
B.
时需注意阀门所在位置
C.
前不用管仪器状态是否正常
D.
前需先进行命名
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反馈参考答案：
举一反三
【单选题】He is a _____ boy who is always asking questions.
A.
curious
B.
interesting
C.
funny
D.
annoying
【单选题】He is a ____________ boy who is always asking questions.
A.
course
B.
career
C.
curious
D.
cause
【简答题】awaken address respect bestow register spontaneously curious enthusiasm. He is a ____________ boy who is always asking questions.
【简答题】awaken register respect enthusiasm address bestow curious spontaneously He is a _______ boy who is always asking questions.
【单选题】He is a ____________ boy who is always asking questions.
A.
curious
B.
anxious
C.
naughty
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