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【多选题】
模拟通信系统的有效性和可靠性指标分别用什么表示A.
频带利用率
B.
传输带宽
C.
解调器输出信噪比
D.
调制制度增益
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】The teacher said that he would not be long and suggested that we wait for him.
A.
stated
B.
declared
C.
proposed
D.
announced
【单选题】They said that not all trainees would be suitable for the jobs _____ they were being trained.
A.
in which
B.
for which
C.
in that
D.
for that
【单选题】He said that not until the wheat died from the lack of water_____ how serious the drought was.
A.
did the villagers realize
B.
the villagers realized
C.
the villagers did realize
D.
realized the villagers
【单选题】It was said that not until the old man had passed away ______ to his relatives.
A.
she let out the secret
B.
was the secret let out
C.
out she let the secret
D.
out let the secret
【简答题】如图所示，下面水杯的杯口与投影面平行，投影线的方向如箭头所示，它的正投影图是( )
【单选题】关于流行性出血热的治疗，下列哪项不正确（ ）
A.
发热期禁用强烈发汗退热剂退热
B.
低血压休克期要积极补充血容量
C.
病程第7日后禁用肝素抗凝治疗
D.
无尿者可用甘露醇静推促进利尿
E.
病程4日内可用抗病毒治疗
【单选题】关于流行性出血热的治疗,下列哪项不正确( )
A.
发热期禁用强烈发汗退热剂退热
B.
低血压休克期要积极补充血容量
C.
病程第7日后禁用肝素抗凝治疗
D.
无尿者可用甘露醇静推促进利尿
E.
病程4El内可用抗病毒治疗
【单选题】.He said that not until the heavy snow blocked the express ______ how serious the weather was.
A.
did the villagers realize
B.
the villages realized
C.
the villages did realize
D.
didn’t the villagers realize
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