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【简答题】
根据《工程网络计划技术规程》(JGJ/T 121—99)．在双代号网络计划中是（ ）。
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举一反三
【单选题】Which of the following statements is NOT true?
A.
Dreams experienced during Stages 3 and 4 are the most memorable.
B.
Most of our sleep time is spent in the non-rapid eye movement state.
C.
REM dreams tend to be more exciting than NREM dreams.
D.
We spend more time in NREM sleep than in REM sleep.
【单选题】The first two stages in the development of civilized man were probably the invention of weapons and the discovery of fire, although nobody knows exactly when he acquired the use of the ____.
A.
latter
B.
latest
C.
later
D.
last
【单选题】Designers generally have the area constructed so that the waste goes out in stages.
A.
set out
B.
set up
C.
set back
D.
set on
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