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【单选题】
自然界的与大气、土壤、岩石等接触，所以含有多种“杂质”，如钙、镁、钾、钠、铁、氟等。现代人趋向于饮用越来越纯净的水，如蒸馏水、纯水、太空水等。殊不知，长期饮用这种超纯净的水，会不利。下列选项最能支持上述论断的是( )。A.
人们对饮食卫生越注重，人体的健康就会越脆弱
B.
只有未经处理的自然界的水，才符合人体健康的需要
C.
超纯净水之所以大受欢迎，是因为它更加卫生、口感更好
D.
自然界水中的所谓“杂质”，可能是人体必需微量元素的重要来源
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【单选题】During the period of English Renaissance, ______ was the keynote of the intellectual movement.
A.
literature
B.
superhuman
C.
h umanism
D.
God
【多选题】A anxiety F indicated K transition B introduce G resent L equivalent C acquaint H reinforce M regretting D acquisition 1 expressed N acceptable E saddled J sensible O shifting There is a special life ...
A.
K
B.
E
C.
A
D.
C
E.
L
F.
I
G.
G
H.
N
I.
H
J.
O
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A.
1Kwh
B.
1Mwh
C.
1Bwh
D.
100000Kwh
【单选题】During the period of H1N1 flu,people______not to go to public places
A.
had always been warned
B.
were always being warned
C.
were always warning
D.
always warned
【简答题】● Look at the charts below. They show Internet sales(蓝色) compared to High Street sales(紫红色) of holidays offered by eight different travel companies during a three-year period. ● Which chart does each...
【单选题】每只100lx、使用寿命为1000h 的灯泡在服役期共消耗1000 kwh电能；某服务需要1000只这种灯泡，服役中将消耗（ ）电能Each 100lx bulb with a service life of 1000h consumes a total of 1000 kwh power during the service period; 1000 such bulbs are require...
A.
1kwh
B.
1Mwh
C.
1Bwh
D.
100000kwh
【简答题】2–19 The lighting needs of a storage room are being met by 6 fluorescent light fixtures, each fixture containing four lamps rated at 60 W each. All the lamps are on during operating hours of the facil...
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