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【多选题】
某工程双代号网络计划如下图所示，该计划表明（ ）。A.
工作C的自由时差为2 d
B.
工作E的最早开始时间为第4天
C.
工作D为关键工作
D.
工作H的总时差为零
E.
工作B的最早完成时间为第1天
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反馈参考答案：
举一反三
【单选题】Dr Brown has the habit of _____ the room when he is thinking about something troublesome.
A.
pacing
B.
stepping
C.
walking
D.
marching
【单选题】As a heavy smoker , he finds it hard to get rid of the habit, which has a bad _____on his health.
A.
affect
B.
effect
C.
effort
D.
affection
【简答题】He has the habit of notes while reading.英译汉
【单选题】Being ______ about food, she doesn't eat any chicken and pork, so fish is her favorite.
A.
casual
B.
particular
C.
indifferent
D.
crazy
【简答题】英译汉：He has the habit of notes while reading.
【单选题】He is accustomed ______ late on weekends for he has the habit of working at night.
A.
to sit up
B.
to sitting up
C.
at sitting up
D.
for sitting up
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