皮皮学，免费搜题
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【单选题】
对缺氧最敏感的细胞是:A.
星形胶质细胞
B.
血管内皮细胞
C.
小胶质细胞
D.
神经元
E.
少突胶质细胞
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举一反三
【单选题】One of the main functions of lube.oil is to remove ( ) from oil cooled pistons
A.
power
B.
friction
C.
heat
【简答题】《药品经营许可证》有效期为 年。有效期满,需要继续经营药品的,持证企业应当在许可证有效期届满前 个月,按照国务院药品监督管理部门的规定申请换发《药品经营许可征》。
【单选题】You are on a tanker discharging oil．When all of the oil that the main cargo pumps can handle is pumped out of a tank，the remainder is ______．
A.
Stripped out and pumped directly ashore into the mainline as the remaining cargo tanks are pumped out with the main pumps
B.
Stripped to one tank and then pumped out with the main pumps
C.
Stripped out and pumped directly ashore after all the tanks have been emptied by the main pumps
D.
Gravitated to the centers from the wings and pumped out with the main pumps
【单选题】A lube oil sample taken from the main engine lube oil system has dark yellow opaque colorThis is the result of .
A.
water contamination
B.
mixing oils of two widely different viscosities
C.
overheating
D.
aeration
【简答题】已知i为虚数单位，则 1 i + 1 i 3 + 1 i 5 + 1 i 7 =______．
【单选题】The countrys main exports are oil, cars and consumer electronic gadgets, oil ______the most important of these.
A.
has been
B.
is being
C.
is
D.
being
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