十进制数15转化为二进制数为()。A.1111 B.1101 C.10000 D.1

题型:单项选择题

问题:

十进制数15转化为二进制数为()。

A.1111

B.1101

C.10000

D.10001

考点:通信工程师通信工程师交换技术通信工程师交换技术题库
题型:单项选择题

阅读理解。

     Driving cars, trucks and motorcycles is an important part of our lives. We do it every day to get to work.

to school or to friends' houses.

     Driving can be very convenient (方便的), but can also cause many problems. Waiting in line at a red light,

a driver may get impatient and decide just to drive right through it. If another car is coming from the other

direction, there might be a terrible accident. Cutting another car off can make its driver angry, so that driver

cuts off someone else. Pretty soon everybody is angry, and impatient.

     Traffic accidents declare millions of lives every year worldwide. In Taiwan alone, over seven people are

killed in accidents every day. The annual death rate (年死亡率) from traffic accidents in Taiwan is twice that

of Japan.

     To allow traffic to move smoothly and safely, everybody must follow the rules. Before you drive, learn all

the traffic laws. That way of driving is safe, convenient and even fun!

1. If you cut another car off, its driver may become _____.

A. impatient

B. nervous

C. surprised

D. stressed

2. The sentence "Traffic accidents declare millions of lives" means _____.

A. Traffic accidents make some people become millionaires.

B. Many people die from traffic accidents.

C. Mil lions of people say they themselves have had traffic accidents.

D. Millions of people remain healthy after traffic accidents.

3. Which of the following may be the best title for this passage?

A. Traffic Safety

B. A Careful Driver

C. How To Drive A Car

D. A Traffic Accident

题型:单项选择题

组长给甲、乙两名青工各一箱零件的加工任务.每箱零件数相同.甲、乙两人刚开始的加工效率之比为5:4,他们同时开始工作,当他们加工的零件总数刚好是一箱的零件数目时,甲的效率降低20%,乙的效率提高20%,这样当甲加工完自己的一箱零件时,乙还剩有10个未加工完,则所加工的一箱零件有多少个?

题型:单项选择题

就给定材料所反映的主要问题,用1200字左右的篇幅,自拟标题进行论述。要求中心明确,内容充实,论述深刻,有说服力。

题型:单项选择题

将0.1 molCu与40 mL 10 mol/L HNO3充分反应,测得反应后的溶液里含有a mol H+,由此可知[ ]

A.生成的气体一定是NO2在标准状况下的体积4.48 L

B.生成的气体一定是NO,在标准状况下的体积约1.49 L

C.被还原的硝酸的物质的量为(0.2 -a)mol

D.反应后的溶液里含有0.2 molNO3-

题型:单项选择题

针刺手法的实验研究主要包括()

A.针刺手法量化

B.针刺手法的应用规律

C.针刺手法效应

D.针刺手法机制

E.针刺手法的源流

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