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【单选题】
IEEE 802.11a标准采用( )调制方式。
A.
FHSS(调频扩频)
B.
DSSS(直接序列扩频)
C.
OFDM(正交频分复用)
D.
MIMO(多进多出)
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【判断题】企业文化作为一种客观存在是不以人们的意志为转移的,这种企业文化的特征称为客观属性。()
A.
正确
B.
错误
【多选题】十九世纪下半叶,以自强求富为目标的洋务运动历时 30 年,最终失败的重要原因
A.
指导思想的封建性
B.
对外具有依赖性
C.
民族资产阶级的荒谬性
D.
民族资产阶级的腐朽性
【单选题】The name of the DLL layer PDU (Protocol Data Unit) is:
A.
Segment
B.
Data stream
C.
Packet
D.
Frame Frame - 正确
【单选题】A HOST DEVICE IS RECEIVING LIVE STREAMING VIDEO. HOW DOES THE DEVICE ACCOUNT FOR VIDEO DATA THAT IS LOST DURING TRANSMISSION?
A.
The device will use sequence numbers to pause the video stream until the correct data arrives.
B.
The device will continue receiving the streaming video, but there may be a momentary disruption
C.
The device will delay the streaming video until the entire video stream is received.
D.
The device will immediately request a retransmission of the missing data.
【单选题】Big data is the driving force behind this zone's development, a steady stream of new big data construction projects constantly _______.
A.
being introduced
B.
introducing
C.
having introduced
D.
to be introduced
【单选题】The name of the DLL layer PDU (Protocol Data Unit) is:
A.
Segment
B.
Data stream
C.
Packet
D.
Frame
【多选题】The database Is configured in ARCHIVELOG mode. The database needs to be up 24 X 7. You want to perform user managed backup for the data files of the HR_DATA tablespace.To accomplish the task, you issu...
A.
No transaction on the tablespace is allowed but you can perform queries.
B.
The tablespace will automatically come out of backup mode when the file copy is complete.
C.
The checkpoint change number is frozen in headers of the data files until the file is removed from backup mode.
D.
The database writes the before image of an entire block to the redo stream before modifying. block tor the first time.
【多选题】十九世纪下半叶,以自强求富为目标的洋务运动历时30年,最终失败的重要原因是
A.
指导思想的封建性
B.
对外具有依赖性
C.
民主阶级的荒谬性
D.
企业管理的腐朽性
【多选题】十九世纪下半叶,以自强求富为目标的洋务运动历时30年,最终失败的重要原因是
A.
指导思想的封建性
B.
对外具有依赖性
C.
民主阶级的荒谬性
D.
民族资产阶级的腐朽性
【判断题】制度文化是精神文化的基础和载体。(    )
A.
正确
B.
错误
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