下列关于线程优先级的说法有误的是（）。A．线程的优先_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

下列关于线程优先级的说法有误的是（）。

A．线程的优先级数值越大，表示该线程优先级越低

B．新建线程将继承创建它的父线程的优先级

C． NORM_PRIORITY代表普通优先级，默认值是5

D．一般情况下，主线程具有普通优先级

答案

参考答案：A

解析：线程的优先级数值越大，表示该线程优先级越高。注意：①其中MAX_PRIORITY代表10，表示该线程优先级最高MIN_PRIORI- TY代表1，表示该线程优先级最低。②可以通过setPhriority()方法来设定线程的优先级。

完形填空

Mike has loved flying since he was small. When he was three years old, his dad took him to an air show. Mike loved the sounds of the plane and he   31  of becoming an airplane pilot(飞行员) some day. As Mike grew up, he learned as   32   as he could about flying. He wanted to go to flying school 33  university. He kept on 34   his parents about it all the time. At that time, pilot training was very   35  . Mike’s parents couldn’t afford it.
Later Mike became a salesman. He hoped to get lots of money for flying school. He traveled  36  America for his factory. He liked to travel,    37    by plane. To save money, he usually stayed in cheap hotels.
One morning, Mike   38   to Atlanta. On the plane, after breakfast, he went to   39  . Some time later, he woke up. The two men beside him were talking in a   40  voice. When Mike heard the word “hijack(劫持)”, he nearly 41  out of his seat, but he pretended(假装) he was still   42  . He listened when the two men talked. Mike quickly learned what was                  43  . They planned to hijack the plane to Cuba. This made Mike very   44  . He knew he had to stop them before they began their    45   .
Mike pretended to use the washroom. On the way he met a hostess(空姐) and told her about the coming   46  . A moment later, the passengers were told that there was something wrong with the plane. Soon the plane landed at the    47   airport.
The two men received a   48   when they saw twenty police officers were    49    them at the airport.
Later Mike was given free flying training as a reward.    50   he became a pilot and flew happily ever since. Now his story is well known in the United States.

D．complaining

A．looking for

B．waiting for

D．talking about

判断题

钢丝绳可以在较高温度下工作,并耐高压,刚性较小,容易弯曲。