手机接收GPRSMAC数据帧时如何知道数据帧的编码方式Coding Scheme:(

题型:单项选择题

问题:

手机接收GPRSMAC数据帧时如何知道数据帧的编码方式Coding Scheme:()

A.在Packet Uplink Assignment中得知

B.在Packet Downlink Assignment中得知

C.在Uplink StateFlag标志位得知

D.在Stealingbits标志位得知

考点:通信工程师GPRS网络规划优化GPRS网络规划优化题库
题型:单项选择题

差动继电器的()的匝数越多,在内部故障含有较大的非周期分量时,继电器的动作时间越长。

题型:单项选择题

“十月怀胎,一朝分娩”,胎儿在母体内发育的场所是

A.子宫

B.卵巢

C.输卵管

D.腹腔

题型:单项选择题

Mrs. Blake teaches English in a large school in the inner area of a big city on the west of coast. Even since she was a young girl,she has wanted to become a teacher. She has taught eight years now and hasn‘t changed her mind. After she graduated from high school, she went on to college. Four years later, she received her bachelor’s degree (B A) in English and her teaching certificate(证书)。 Then she went to teach in the secondary schools of her state. In the summers, Mrs. Blake takes more classes; she hopes to get a master‘s degree (M A)。 With an MA, she will receive a higher salary and if possible, she hopes to get a doctor’s degree as well. The school day at Mrs. Blake‘s high school, like that in many high schools in the United States, is divided into one hour each. Mrs. Blake must teach five of these periods. During her free period, which for her is from 2 to 3 P.M. , Mrs. Blake must meet with parents, make out examinations, check assignments at all, Mrs. Blake works continuously from the time she arrives at school in the morning till the time she leaves for home late in the afternoon.

1. How long is it since Mrs. Blake graduated from middle school?

A. four years B. eight years C. twelve years d. twenty years

2. According to the article, which is the right order of the degrees a person can receive after going to university?

A. a doctor‘s degree – a bachelor’s degree – a master‘s degree

B. a bachelor’s degree – a master‘s degree – a doctor’s degree

C. a master‘s degree—a bachelor’s degree – a doctor‘s degree

D. a bachelor’s degree – a doctor‘s degree—a master’s degree

3. How many degrees has Mrs. Blake achieved so far?

A. one   B. two    C. three   D. none

4. Which of the following sentences is not true?

A. Mrs. Blake teaches in the inner area of big city on the east of the United Sates

B. Mrs. Blake has turned her wish of becoming a teacher into reality.

C. Mrs. Blake is still studying in her holidays in order to get higher degrees.

D. The working hours in the school where Mrs. Blake works are similar to those of many other high schools in the states.

题型:单项选择题

存查煤样在原始煤样制备的同时,用相同的程序于一定的()阶段分取。

A、制样

B、破碎

C、筛分

题型:单项选择题

遗传的基本规律不适用于()

①噬菌体

②乳酸菌

③酵母菌

④蓝藻

⑤豌豆

A.①②④

B.②③⑤

C.②③④

D.①②③

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