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【单选题】
—The volunteers are doing a great job in Yushu. —Yes. They are helping the people ________ are suffering from the earthquake. [     ]
A.
which
B.
what
C.
/
D.
who
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皮皮学刷刷变学霸
举一反三
【简答题】A.259(pH=7~12)    B.271(pH=6~12) C.262(pH=2~7)D.227(pH=7~12) E.252(pH=7)
【简答题】一色环电阻标注的颜色为绿紫红金,其电阻值为 Ω ,允许偏差为
【单选题】对于没有换向极的小型直流电动机,带恒定负载向一个方向旋转,为了改善换向,可将其电刷自几何中性面处沿电枢转向()。
A.
向前适当移动β角
B.
向后适当移动β角
C.
向前移动90
D.
向后移到主磁极轴线上
【多选题】有关药物的肾排泄,正确的是( )。
A.
如药物只经肾小球滤过,无肾小管分泌和肾小管重吸收过程,并全部从尿排出,则药物排泄率与肾小球滤过率相等
B.
肾小管分泌主要在远端肾小管细胞进行
C.
药物在肾小管的主动重吸收,主要在近曲肾小管进行
D.
水溶性药物难以通过肾小管上皮细胞的类脂质膜,不易重吸收,易从尿中排出
E.
多数弱酸或弱碱胜药物的肾排泄均经过肾小球滤过、肾小管分泌及重吸收过程
【多选题】有关药物的肾排泄,正确的是(多选)
A.
如药物只经肾小球滤过,无肾小管分泌和肾小管重吸收过程,并全部从尿排出,则药物排泄率与肾小球滤过率相等
B.
肾小管分泌主要在远端肾小管细胞进行
C.
药物在肾小管的主动重吸收,主要在近曲肾小管进行
D.
水溶性药物难于通过肾小管上皮细胞的类脂质膜,不易重吸收,易从尿中排出
E.
多数弱酸或弱碱性药物的肾排泄均经过肾小球滤过、肾小管分泌及重吸收过程
【单选题】—What about the MP3? —I am eager to have Can you give to me as a birthday present, Dad?
A.
one; it
B.
it;one
C.
it; it
D.
one; one
【简答题】I am always eager to do experiments, especially chemistry ones. It's _26_ to work with test tubes and beakers(烧杯) , even though sometimes my efforts end in__ 27 ___. Experiments were fun for me __28 a...
【单选题】色环电阻的允许偏差为金色,其允许偏差为
A.
±5%
B.
±10%
C.
±15%
D.
±20%
【单选题】“Did you hear someone knocking at the door?” “Yes, I did. I heard him______three times.” [     ]
A.
knocking
B.
knocked
C.
being knocking
D.
knock
【单选题】— Did you get ___ part that you tried out for in the play? — No, someone else got it, but I got ____ better one. [     ]
A.
the; a
B.
the; the
C.
a; the
D.
a; a
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