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【单选题】
How many volts does a power supply’s 4-pin Molex connector carry to internal devices?（）A.
2.5 volts
B.
5 volts
C.
6 volts
D.
15 volts
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举一反三
【单选题】The World Expo 2010 is being held at a time the world is looking for a new kind of balance between nature and cities．
A.
when
B.
where
C.
which
D.
that
【简答题】维生素B2吸收部位在( ),若( )服用则胃排空过快,降低了生物利用度。
【单选题】听力原文： The World Health Organization warns between 25 and 35 percent of the world population could be affected by a human influenza pandemic, but the WHO says most people would survive. Health experts ...
A.
draw a map of affected area.
B.
make a plan for fighting against bird flu.
C.
make a combat.
D.
find ways to prevent human flu.
【简答题】在数字系统中,根据电路逻辑功能的不同,数字电路可分为 逻辑电路 和 逻辑电路 两大类。
【单选题】下列图象关系合理的是（ ）
A.
在部分变质的NaOH溶液中加入稀硫酸
B.
在饱和的KNO 3 溶液中加入KNO 3 晶体
C.
向pH=9的KOH溶液中不断加水
D.
分别将等质量的Fe和Mg加入两份质量相同浓度相同的稀盐酸中
【单选题】For an upright vessel, draft is the vertical distance between the keel and the ______.
A.
waterline
B.
freeboard deck
C.
plimsoll mark
D.
amidships section
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