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【单选题】
下列有关NBDP设备的描述正确的有：——。①NBDP设备采用七单元恒比码检错；②CFEC工作能进行点对面的通信，接收多个电台：③在连续重复16个机器周期后，不能建立通信连路，设备将自动返回到Stand by状态；④ARQ工作方式采用自动请求重复方式进行纠错；⑤FEC工作方式采用二重时间分集前向纠错；⑥ARQ通信换流指令是Over指令。
A.
①②③⑤
B.
①③⑤⑥
C.
②③④⑥
D.
①②④⑤⑥
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举一反三
【单选题】Cracks have originated in the bilge keel and propagated into the bilge plate causing ______ of the main structure.
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trouble
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【单选题】The emergency bilge suction or bilge injection valve is used to pr _____ of the ship.
A.
proceeding
B.
overloading
C.
collision
D.
flooding
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【单选题】Which of the following sentences does NOT contain an attributive clause?
A.
It is said that the U.S. government had made public a survey that is about human rights.
B.
Those who do not keep their promise can be regarded as promise-breakers.
C.
My father ’ s words, which are heartfelt and sincere, touch my heart.
D.
She asked the reason why there was a delay.
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【单选题】The emergency bilge suction or bilge _____ is used to pr flooding of the ship.
A.
injection valve
B.
relief valve
C.
discharge valve
D.
inlet filter
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相关题目：
【单选题】Cracks have originated in the bilge keel and propagated into the bilge plate causing ______ of the main structure.
A.
trouble
B.
malfuntion
C.
failure
D.
Any one of the above
查看完整题目与答案
【单选题】The passage focuses primarily on ______.
A.
criticizing certain aspects of the city
B.
romanticizing city life in a bygone era
C.
pointing out how city life could be improved
D.
blaming problems on city residents
查看完整题目与答案
【简答题】My Understanding of Love Read U5 Text A carefully and then write your response in NO LESS THAN 200 words, in which you should: ■ summarize the main message of the story, and then ■ opinion on My Under...
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【单选题】The emergency bilge suction or bilge injection valve is used to pr _____ of the ship.
A.
proceeding
B.
overloading
C.
collision
D.
flooding
查看完整题目与答案
【单选题】Which of the following sentences does NOT contain an attributive clause?
A.
It is said that the U.S. government had made public a survey that is about human rights.
B.
Those who do not keep their promise can be regarded as promise-breakers.
C.
My father ’ s words, which are heartfelt and sincere, touch my heart.
D.
She asked the reason why there was a delay.
查看完整题目与答案
【简答题】阅读理解 Learners report two main difficulties in reading, which may be linked. There are too many unknown words and as a result reading is simply not a pleasure. For some students, even reading in their ...
查看完整题目与答案
【简答题】What is the relationship between New England Transcendentalism and American Romanti ci sm?
查看完整题目与答案
【单选题】The emergency bilge suction or bilge _____ is used to pr flooding of the ship.
A.
injection valve
B.
relief valve
C.
discharge valve
D.
inlet filter
查看完整题目与答案
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