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【单选题】
低温库存较久的血液,血浆中哪种离子浓度升高A.
Cl
B.
Ca2+
C.
K+
D.
有机负离子
E.
Na+
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【简答题】《念奴娇赤壁怀古》的作者是
【单选题】选择一个恰当的选项将英文句子补充完整。 Due to differences in Customs clearing times between the individual countries, ( )cannot be guaranteed on all international shipments.”
A.
shipping fees
B.
delivery time
C.
payment
D.
shipping cost
【简答题】So far efforts by individual countries _____________ (do) little to control the spread of terrorism.
【单选题】选择一个选项将该句补充完整:Due to differences in customs clearing times between the individual countries, _____cannot be guaranteed on all international shipments. ( )
A.
shipping fees
B.
delivery time
C.
payment
D.
shipping cost
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