【判断题】在双代号时标网络图中, 自始至终不出现波形线的线路即为关键线路。
【单选题】时标网络图中,从始至终不出现( )的线路为关键线路。
【单选题】关于关键路线,下列说法错误的是( )。
A.
在双代号时标网络中,从起始节点到终止节点,自始至终不出现波形线的是关键路线
B.
在双代号网络图中,关键路线是工作持续时间最长的路线
C.
关键路线上如果总时差为零,自由时差可以不为零
D.
在单代号网络图中,从起始节点到终止节点,所有工作之间的时间间隔为零的线路为关键线路
【单选题】时标网络图中,从始至终不出现 的线路为关键线路。
【单选题】时标网络图中,关键线路始至终不出现( )
【多选题】用烘干法测定食品中水分含量,要求样品必须具备 1 、 ; 2 、 ; 3 、 三个条件。
C.
食品中其他组分在加热过程中引起的化学变化非常小,可忽略不计
【简答题】阅读理解。 What makes people happier, money or having happy friends and neighbors? Scientists have found an answer as part of a study. The new study found that friends of happy people had a greater chance ...
【简答题】阅读理解。 What makes people happier:money or having happy friends and neighbors? Scientists have found an answer as part of a study. The new study found that friends of happy people had a greater chance o...
【单选题】在时标网络图中,关键线路指提自始至终不出现( )的线路
【单选题】Question 2. Richard Layard _______. -----Passage 2----- (Para. 1) Does money make people happier? Studies show that it does — when people at the poverty level are suddenly paid more. Other studies als...
A.
probably makes a lot of money as an economist
B.
studies the factors affecting people’s happiness
C.
lives at the poverty level
D.
compares himself to friends and neighbors