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【单选题】
碳水化合物是人体热能的重要来源,占人体每日所需热能的百分比是( )。A.
20%~25%
B.
40%~50%
C.
60%~70%
D.
80%~ 90%
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【单选题】Recent breakthrough in bioengineering technology has enabled the increased scale of producing both ethanol and bio-diesel.
A.
Y
B.
N
C.
NG
【简答题】Section A – This ONE question is compulsory and MUST be attempted Introduction QTP Co produces timber framed windows for builders’ merchants, property builders and property maintenance companies. It d...
【单选题】对邻接表的叙述中, ( )是正确的。
A.
无向图的邻接表中，第i个顶点的度为第i个链表中边结点数的两倍
B.
邻接表比邻接矩阵的操作更简便
C.
邻接矩阵比邻接表的操作更简便
D.
求有向图中结点的度必须遍历整个邻接表
【单选题】The author mentions Csikszentmihalys survey to show that
A.
creative workers are most productive when they are doing nothing.
B.
creative workers consider e-mails and meetings as their enemies.
C.
creative workers don't like to take part in interviews.
D.
creative workers don't like to be distracted from work.
【简答题】Please give the produc t of the following reaction.
【单选题】During the 1990s world oil production will approach geological estimates of maximum production______, even with rapidly increasing petroleum prices.
A.
capability
B.
quota
C.
potentiality
D.
capacity
【单选题】Which factor must be considered when determining the order of loading of dissimilar products through the same piping system aboard a tanker?
A.
Contamination of the cargo
B.
Flash points
C.
Reid vapor pressures
D.
Specific gravities
【单选题】The Ethical Consumer Research Association will provide information to shoppers on
A.
product price.
B.
product quality.
C.
production methods.
D.
manufacturers.
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