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【单选题】
以下关于 LTE TDD的说法正确的是哪个()A.
上行时隙转下行时隙需要一个特殊时隙做保护间隔
B.
下行时隙转上行时隙需要一个特殊时隙做保护间隔
C.
两种情况都不需要特殊时隙做保护间隔
D.
两种情况都需要特殊时隙做保护间隔
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举一反三
【单选题】Disabled people are more respected. Even the government no longer____the belief that disabled people are improper as teachers.
A.
contributes to
B.
subscribes to
C.
attends to
D.
objects to
【简答题】Even if all government money for research were cut off, the force of competition ______ (仍将带来技术的进步).
【单选题】One reason we need government, even in a market economy, is that
A.
there are insufficient quantities of externalities in the absence of government.
B.
property rights become too entrenched in the absence of government.
C.
the invisible hand seldom leads to an efficient allocation of resources in any market
D.
the invisible hand, while powerful, is not perfect.
【单选题】Centuries ago, in Japan, the government even set up universities and hold ceremonies in memory of Confucius.
A.
Y
B.
N
C.
NG
【单选题】近现代气象史时代经历了四次飞跃性发展,下列观测手段属于第二次飞跃发展的是( )。
A.
气象仪器相继发明
B.
无线电报的发明
C.
无线电探空仪发明
D.
空间和地面大气遥感探测与气象信息技术系统日趋完善
【单选题】近现代气象史时代经历了四次飞跃性的发展,下列的观测手段和资料收集方法属于第三次飞跃的是( )。
A.
无线电报的发明
B.
无线电探空仪发明
C.
地面气象观测网产生
D.
温度表、雨量器、气压表等相继发明
【单选题】下列有关视力检查法的叙述不正确的是:
A.
远视力检查距视力表5m
B.
近视力检查距视力表30cm
C.
若病人距视力表2m，方能看清视力表1上0.1，则该病人视力为0.04
D.
若走到距视力表1m处仍不能辨认最大字符缺口方向，则改查手动
E.
若不能正确判断手动，则改查光感
【单选题】One reason we need government, even in a market economy, is that
A.
there is insufficient market power in the absence of government.
B.
property rights are too strong in the absence of government.
C.
the invisible hand is not perfect.
D.
Both a and b are correct.
【单选题】The situation is very serious, even if the government tries to pretend ______.
A.
furthermore
B.
otherwise
C.
actually
D.
therefore
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