[判断题]同业拆入业务种类，按交易方式可分为通过中介交易拆入和不通过中介交易拆入。（）
A.正确
B.错误

[单选题]高压汽轮机运行中，若发现在相同的流量下监视段压力增加( )以上，必须进行通流面的清洗。
A.5%；
B.15%；
C.20%；
D.30%。

[判断题]调查询问与调查访问的应用领域不同。
A.正确
B.错误

[单选题]金属脚手架与±400kV 及以下带电架空线路沿垂直方向的最小安全距离为（　　）m。
A.7
B.7.5
C.8
D.$8.50

[单项选择]PPD（++）应当是（）
A. 72小时结果：硬结直径8mm
B. 72小时结果：硬结直径15mm
C. 72小时结果：硬结直径21mm
D. 72小时结果：硬结直径2mm
E. 72小时结果：硬结直径20mm伴有水疱

[单选题]对于两节点多支路的电路用( )分析最简单。 ( )
A. 支路电流法
B. 节点电压法
C.回路电流
D. 戴维南定理

[不定项选择题]共用题干 Earth's Inner Core

Scientists have long struggled to understand what lies at the planet's center.Direct
observation of its center is impossible,so researchers must_________(1)to other evidence.
In 1889,a German scientist detected a severe earthquake in Japan.Geophysicists
concluded that shock waves_________(2) jolts（晃动）from one side of Earth through
the center to the other side.Then in 1936,Danish geophysicist lnge Lehmann studied the
waves' __________ (3) to determine that within Earth's core of molten（熔化了的）iron
lies a solid inner core一but_________(4) that core was made of eluded（难倒）her.
Other geophysicists quickly determined that Lehmann's inner core was composed mostly
_________(5) iron.Since then,Lehmann's discovery has _________(6)
conventional Earth science.
But now scientists are challenging traditional theory with new and radical_________
(7).For example,Earth's center could actually contain an"inner core within the inner
core."claim lshii and colleague Adam Dziewonski.
Analyzing hundreds of thousands of earthquake wave _________(8),they
maintain that the inner core has at its heart a tiny, even more solid sphere（球体）.This
sphere"may be the oldest fossil_________(9)from the formation of Earth,"says Dziewonski.
Dziewonski and Ishii speculate that shortly _________(10)Earth formed around
4.8 billion years ago,a giant asteroid（小行星）smashed into the young planet and nearly
melted it.But Earth's center didn't quite melt;it_________(11)mass as the planet
cooled. The core within a core may be the kernel（核心）that endured. " Its presence
could change our basic ideas about the_________(12)of the planet,"Dziewonski
says.
Dziewonski's idea is tame（温和的）compared to the_________( 13 ) theories of
independent geophysicist J. Marvin Herndon.Earth's inner core is made not of iron,he
claims,but a_________(14)of nickel and silicon.Herndon has a truly revolutionary
notion : Within the nickel silicide（硅化物）inner core is also an "inner" inner core一an
8km-wide ball of the element uranium.Uranium is radioactive.Herndon thinks the uranium
releases heat energy as its atoms_________(15)fission-split and crash into one
another in a chain reaction.In other words,we may live on top of a gigantic, "natural"
nuclear power plant. _________(4)
A.whether
B.what
C.why
D.how

[单项选择]