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【单选题】
对于一个有向图，若一个顶点的入度为k1、出度为k2，则对应邻接表中该顶点的中的结点数为（ ）A.
k1
B.
k2
C.
k1-k2
D.
k1+k2
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反馈参考答案：
举一反三
【单选题】根据《铁路旅客运输办理细则》，线路中断时，旅客要求在发站或一个中途站(返回途中自行下车无效)等候继续旅行，凭原票在通车()可恢复旅行。
A.
5日内
B.
10日内
C.
15日内
D.
30日内
【单选题】An average human being has how many litres of blood?
A.
1 litre
B.
2litres
C.
5 litres
D.
10 litres
【单选题】To produce 19 litres of Product X, a standard input mix of 8 litres of chemical A and 12 litres of chemical B is required. Chemical A has a standard cost of $20 per litre and chemical B has a standard...
A.
Both variances were adverse
B.
Both variances were favourable
C.
The total mix variance was adverse and the total yield variance was favourable
D.
The total mix variance was favourable and the total yield variance was adverse
【单选题】340 litres of chemical X were produced in a period. There is a normal loss of 10% and an abnormal loss of 5% of the material input into the process.How many litres of material were input into the proc...
A.
377 litres
B.
400 litres
C.
380 litres
D.
358 litres
【单选题】Did you know that ___________ a single ton of steel, _______ takes about 91,000 litres of water?
A.
producing ; it
B.
to produce ; it
C.
to produce ; which
D.
producing ; which
【单选题】《铁路旅客运输办理细则》线路中断后，旅客要求在发站或一个中途站（返回途中自行下车无效）等候继续旅行，凭原票在通车（）日内可恢复旅行。旅客要求恢复旅行时，车站应办理签证手续。
A.
10
B.
11
C.
12
D.
13
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