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【单选题】
用PCM对语音进行数字化,如果将声音分为128个量化级,采样频率为8000次/s,那么一路语音需要的数据传输率是( )。
A.
56kbps
B.
64kbps
C.
128kbps
D.
1024kbps
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参考答案：
举一反三
【多选题】β2受体主要引起的效应有( )
A.
胃肠平滑肌舒张
B.
皮肤粘膜血管收缩
C.
支气管平滑肌舒张
D.
汗腺分泌
E.
瞳孔开大肌收缩
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【单选题】产生脑栓塞最多见的栓子来源是（ ）
A.
空气栓子
B.
脂肪栓子
C.
心脏病栓子
D.
肺动脉血栓
E.
大动脉硬化斑块脱落
查看完整题目与答案
【单选题】已完工程及设备保护费费率如下表所示，则某机房传输设备安装工程中，其已完工程及设备保护费的费率为（  ）。
A.
2.0%
B.
1.8%
C.
1.5%
D.
0.0%
E.
无法确定
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【单选题】A. c omputer B.i c e C. choi c e D.twi c e
A.
twi c e
B.
choi c e
C.
i c e
D.
c omputer
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【单选题】He hated the war so much that the decided to leace the army for good .
A.
permanently
B.
fo good-looking
C.
for a long time
D.
shortly
查看完整题目与答案
【单选题】He ___ the army for three years
A.
has joined
B.
joined
C.
was in
D.
has been in
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【单选题】Why did Fabio Hendry and Seongil Choi make the stools?
A.
Because they regarded it as a project to explore the usability of various waste products.
B.
Because they intended to reduce the amount of leftover nylon powder.
C.
Because they expected to make the stools in a variety of shape.
D.
Because they wanted to consume less energy and  leave less waste.
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【单选题】He in the factory for three years before he joined the army.
A.
has worked
B.
works
C.
had worked
D.
will work
查看完整题目与答案
【单选题】Why did Fabio Hendry and Seongil Choi make the stools?
A.
Because they regarded it as a project to explore the usability of various waste products.
B.
Because they intended to reduce the amount of leftover nylon powder.
C.
Because they expected to make the stools in a variety of shapes.
D.
Because they wanted to consume less energy and leave less waste.
查看完整题目与答案
【简答题】脑栓塞最多见的栓子来源是 A大动脉硬化斑块脱落 B．肺动脉血栓 C．心脏病栓子 D．空气栓子 E．脂肪栓子
查看完整题目与答案
相关题目：
【多选题】β2受体主要引起的效应有( )
A.
胃肠平滑肌舒张
B.
皮肤粘膜血管收缩
C.
支气管平滑肌舒张
D.
汗腺分泌
E.
瞳孔开大肌收缩
查看完整题目与答案
【单选题】产生脑栓塞最多见的栓子来源是（ ）
A.
空气栓子
B.
脂肪栓子
C.
心脏病栓子
D.
肺动脉血栓
E.
大动脉硬化斑块脱落
查看完整题目与答案
【单选题】已完工程及设备保护费费率如下表所示，则某机房传输设备安装工程中，其已完工程及设备保护费的费率为（  ）。
A.
2.0%
B.
1.8%
C.
1.5%
D.
0.0%
E.
无法确定
查看完整题目与答案
【单选题】A. c omputer B.i c e C. choi c e D.twi c e
A.
twi c e
B.
choi c e
C.
i c e
D.
c omputer
查看完整题目与答案
【单选题】He hated the war so much that the decided to leace the army for good .
A.
permanently
B.
fo good-looking
C.
for a long time
D.
shortly
查看完整题目与答案
【单选题】He ___ the army for three years
A.
has joined
B.
joined
C.
was in
D.
has been in
查看完整题目与答案
【单选题】Why did Fabio Hendry and Seongil Choi make the stools?
A.
Because they regarded it as a project to explore the usability of various waste products.
B.
Because they intended to reduce the amount of leftover nylon powder.
C.
Because they expected to make the stools in a variety of shape.
D.
Because they wanted to consume less energy and  leave less waste.
查看完整题目与答案
【单选题】He in the factory for three years before he joined the army.
A.
has worked
B.
works
C.
had worked
D.
will work
查看完整题目与答案
【单选题】Why did Fabio Hendry and Seongil Choi make the stools?
A.
Because they regarded it as a project to explore the usability of various waste products.
B.
Because they intended to reduce the amount of leftover nylon powder.
C.
Because they expected to make the stools in a variety of shapes.
D.
Because they wanted to consume less energy and leave less waste.
查看完整题目与答案
【简答题】脑栓塞最多见的栓子来源是 A大动脉硬化斑块脱落 B．肺动脉血栓 C．心脏病栓子 D．空气栓子 E．脂肪栓子
查看完整题目与答案
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