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【多选题】
需求阶段的主要文档有哪些?A.
可行性报告
B.
需求定义文档
C.
需求规格说明书
D.
软件初步设计文档
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举一反三
【单选题】Be careful! Don't cut ________ with thenew knife.
A.
you
B.
yourself
C.
your
D.
yours
【单选题】The father helped his children________thenew bicyclethey bought online.
A.
set
B.
replace
C.
assemble
D.
install
【单选题】What does the writer say about advertising?
A.
It causes pollution directly.
B.
It wastes energy.
C.
It puts litter under control.
D.
It brings about waste.
【单选题】Not until yesterday ________ anything about thenew advertising campaign.
A.
I learned
B.
have I learned
C.
did I learned
D.
that I learned
【简答题】ener_etic
【单选题】These children are so full of__________ that they cannot keep still．
A.
power
B.
energy
C.
force
D.
strength
【单选题】单相异步电动机空载或在外力帮助下能启动， 但电机转向不定，可能原因是( )。
A.
(A)启动绕组开路
B.
(B)工作绕组开路
C.
(C)电源开路
D.
(D)工作绕组短路
【单选题】Several scientists are working together to create ______ they hope will be the cheapest form of energy in the near future. [ ]
A.
which
B.
that
C.
what
D.
as
【判断题】违反体育运动精神的犯规包含 防守队员在试图中断对方的快攻时,从进攻队员的身后或侧面与其造成身体接触,并且此时,在该进攻队员和他所进攻的球篮之间没有防守队员( )。
A.
正确
B.
错误
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