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【单选题】
有一饱和烃，分子式为C6H12，并且含1个伯碳原子，下面哪一个有机物不可能是该饱和烃？A.
甲基环
B.
乙基环丁烷
C.
丙基环丙烷
D.
甲基环丁烷
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【单选题】Japanese Car Keeps Watch for Drunk Drivers A concept car developed by Japanese Company Nissan has a breathalyzer-like detection system and other instruments that could help keep drunk or over-tired dr...
A.
It has a sensor system that could issue a warning if the driver is drank.
B.
It has sensors that detect traces of alcohol inside the car.
C.
It has sensors locked up in the ignition system.
D.
It has a breathalyzer-like detection system.
【简答题】简述母畜流产的常见症状与表现?
【单选题】Japanese Car Keeps Watch for Drunk Drivers ?? Aconcept car developed by Japanese company Nissan has a breathalyzer-likedetection system and other instruments that could help keep drunk or over tireddr...
A.
It has a sensor system that could issue a warning if the driver is drunk
B.
It has sensors that detect traces of alcohol inside the car
C.
It has sensors locked up in the ignition system
D.
It has a breathalyzer-like detection system
【多选题】信息化战争发展趋势之一就是实现指挥平台与作战手段的高度智能化,其表现包括:
A.
指挥控制手段高度自动化和智能化
B.
大量智能化的武器系统和平台装备军队
C.
许多作战行动发生在智能化领域
D.
作战部队的规模将扩大
【单选题】听力原文：W：Good morning，Sunny Car Rental Company．What Call I do for you? M：Good morning．This is Paul King calling from the Speed Company．We need a ear to the airport for Mr. Phillips tomorrow．His flight i...
A.
At 2:30 tomorrow.
B.
Before noon tomorrow.
C.
At 2:30 today.
D.
Before noon today.
【简答题】如图所示的转速、电流双闭环直流调速系统稳态运行时,转速给定值为Un*,负载电流IdL。 回答如下问题: (1)正常情况下,ASR、ACR两个调节器的状态、输入偏差电压、输出电压各是多少?(填入到下表第2列,每个空1分,共6分) (2)若由于机械原因,造成电机转轴堵死,此时ASR、ACR两个调节器的状态、输入偏差、输出偏差电压又是多少?(填入到下表第3列,每个空1分,共6分) (3)分析由于机械原因...
【单选题】下列关于中枢性睡眠呼吸暂停综合征与阻塞性睡眠呼吸暂停综合征的区别，错误的是：（）
A.
中枢性睡眠呼吸暂停综合征多数有神经系统或运动系统的病变。
B.
阻塞性睡眠呼吸暂停综合征呼吸暂停时胸腹运动同时消失
C.
中枢性睡眠呼吸暂停综合征可与阻塞性睡眠呼吸暂停综合征同时出现
D.
单纯中枢性睡眠呼吸暂停综合征较少见
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