【简答题】【消耗次数：1】
瀑布模型的两个主要不足是？
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【多选题】
瀑布模型的主要优点有（ ）。
①
开发过程基本上是线性顺序的，便于管理
②
开发过程灵活，可以随意变更需求
③
需求明确时可以获得较好效果
④
各阶段可以同步开发，开发效率高
【多选题】
下列关于瀑布模型的描述正确的是( )。
①
瀑布模型的核心是按照软件开发的时间顺序将问题简化。
②
?瀑布模型具有良好的灵活性。
③
瀑布模型采用结构化的分析与设计方法，将逻辑实现与物理实现分开。
④
利用瀑布模型，如果发现问题修改的代价很低。
随机题目
【单选题】
Drive straight ahead, and then you will see a_______to the Shanghai-Nanjing Expressway.
①
sign
②
mark
③
signal
④
board
【单选题】
It’s a mistake to think of Florida only __ its tourist attractions.
①
by means of
②
in terms of
③
in connection with
④
by way of
【单选题】
The teacher said ______ wanted to go to the cinema must be there before 6:00.
①
those who
②
that
③
who
④
which
【单选题】
The number of people who ______ cars of their own is increasing.
①
has
②
have
③
there is
④
there are
【单选题】
It’s time for Meimei and ______ to the Palace Museum.
①
I going
②
I to go
③
me going
④
me to go
【单选题】
—Excuse me, do you know _______?—Yes. Next Friday.
①
when will the volunteers come back
②
when the volunteers will come back
③
how will the volunteers come back
④
how the volunteers will come back
【单选题】
More and more children are interested in blind boxes _______ they wonder what is inside.
①
so
②
because
③
unless
④
though
【单选题】
The boy was seen ______ the piano at 9 yesterday evening.
①
to play
②
play
③
playing
④
played
【单选题】
I _______ sleep very well, but then I started doing yoga and it really helps.
①
didn’t use to
②
used to
③
was used to
④
wasn’t used to