设有一组作业，它们的提交时刻及运行时间如下所示：  

作业号  提交时刻  运行时间(分钟)

1    8:00     70   

2    8:40     30   

3    8:50     10   

4    9:10     5

在单道方式下，采用短作业优先调度算法，作业的执行顺序为(62)。

(64)

(63)

(62)

(61)

(59)

In the following essay, each blank has four choices. Choose the best answer and write down on the answer sheet.

(57)

(58)

(56)

In(66)the strength of the carrier signal is varied to represent binary 1 or 0.(67)is a system that can map a name to an address and conversely an address to an name.(68)is a three -way handshaking authentication protocol that it's packets are encapsulated in the point - to -point protocol.(69)is an approach that enables an ATM Switch to behave like a LAN switch.(70)is an guided media which is made of glass or plastic and transmits signals in the form. of light.