心脏每分钟排血量

You're in the supermarket, and a man collapses. He's gasping. It's CPR time. But wait, was it 20 compressions, two breaths, or 15 to every one breath? Can't remember? Well you may not have to. Because theres hands-only CPRpressing the chest fast and

发表于:2019-01-08 / 阅读(58) / 评论(0) 分类 Scientific American(十)月

By Carol Pearson Washington 25 July 2007 You may have heard about young athletes, still teenagers, whose hearts stop beating, sometimes while playing sports. In many of these cases, their parents and doctors find out after the fact that these young a

发表于:2019-01-12 / 阅读(81) / 评论(0) 分类 2007年VOA标准英语(七月)

OPEC will cut its oil output by 1.5 million barrels a day starting in November, with chances of more cuts to come. But from Paris, Lisa Bryant reports the announcement was met by a further drop by financial markets. OPEC hopes that by cutting output

发表于:2019-01-13 / 阅读(77) / 评论(0) 分类 VOA标准英语2008年(十月)

OPEC Agrees to Reduce Oil Output Kerry Sheridan Oil prices edged higher Tuesday after ministers from the Organization of Petroleum Exporting Countries (OPEC) agreed to reduce output. OPEC ministers ha

发表于:2019-01-31 / 阅读(59) / 评论(0) 分类 VOA2004(上)--各类新闻

BEIJING, Aug. 19 (Xinhua) -- China's steel output growth slowed in July and prices of steel products have continued to drop, according to data from the National Development and Reform Commission (NDRC). Crude steel production gained 4.2 percent year

发表于:2019-02-06 / 阅读(64) / 评论(0) 分类 英语新闻

China's industrial output growth accelerates in October BEIJING, Nov. 9 (Xinhua) -- Industrial production growth continued to accelerate in October, presenting evidence that China's economy is picking up steam after seeing its lowest growth rate in m

发表于:2019-02-06 / 阅读(47) / 评论(0) 分类 英语新闻
学英语单词
-azoline
accumulated island
acethydrazide
active solar
aerodynamic load(ing)
afews
ALCOMPAC
analog telephone transmission
anthoid
apportionment of crown rent and premium
audacity
be in a state of grace
beflower
block sandstone
box stall
bring into fullplay
centicipitous
ceramic insulator
chadless performation
chamene
charles iis
Clangula
closure works
common buffer
conical barrel
constructive eviction
cropping intensity
cyclogyro
downpression
elastic-rim wheel
ETNO
fatas
fif
Fitschen
flame-retardant fiber
flatteringly
G6
gas-phase dispersion
general industrial statistics
halwai
Hoai Son
in young
interlamellar scleral resection
James Abraham Garfield
Kiamusze
knock-
lapping position
laser skin protection
lateral shifting
launchpad
Line of Actual Control
littl
Lyne
marypat
merca
metallocarboxypeptidase
michers
miscalculation
naturally plus
ninth-inning
nitrogen lag
nonstative
normal density
nucleus nervi hypoglossi
off lying danger
Parachorophenol
play on someone
potassium hydrotartrate
powerpc 601
purpura haemorrhagica
radiumology
recirculating ratio
reject of passenger claims
scattered minefield
semantic error checking
Semitic deity
single-reduction gear
skiffles
sladang
spilostethus hospes hospes
stationary satellite camera
statistic design value
stretching strain
sunnar
swivels for anchor chain
sync field
technologizing
theory of mind
thin film element
three-day sickness
trial procedure
United Synagogue of America
value-chain
vertical aerial photograph
vertical lift gate
video tape machine
virgella
Virmel engine
wartiest
whooping it up
window origin
ytterbic chloride