EDTA·2NaCl比枸橼酸钠抗凝效果强多少倍()。 A.2倍 B.4倍 C.6倍

题型:单项选择题 A1/A2型题

问题:

EDTA·2NaCl比枸橼酸钠抗凝效果强多少倍()。

A.2倍

B.4倍

C.6倍

D.8倍

E.10倍

考点:输血技术(师)血液及其成分的保存、运输和发放血液及其成分的保存、运输和发放题库
题型:单项选择题 A1/A2型题

( )彻夜不眠的睡眠障碍患者整夜迷迷糊糊,眼闭着,但外界的声响能听到,意思模糊。

题型:单项选择题 A1/A2型题

如果移植物与受者的ABO血型不符,移植后会发生以下哪种反应 ()

A.超急性排斥反应

B.急性排斥反应

C.慢性排斥反应

D.移植物抗宿主反应

E.超慢性排斥反应

题型:单项选择题 A1/A2型题

“预防为主”是指在生产活动中,针对生产的特点,对生产要素采取管理措施,有效地控制不安全因素的发展与扩大,把可能发生的事故消灭在萌芽状态,以保证生产过程中人的安全与健康。

题型:单项选择题 A1/A2型题

关于交易所上市基金(ETF),下列表述错误的有( )。

A.ETF可以在交易所挂牌买卖,投资者可以直接买卖ETF份额
B.ETF基本是指数型开放式基金
C.投资者可以用现金申购或者赎回ETF
D.ETF可以分散投资,降低投资风险

题型:单项选择题 A1/A2型题


A patrol team of sea lions and dolphins featured in a large-scale military exercises being conducted by the U. S. and its allies in the Pacific Ocean. The machine (1) took part in simulated mine recovery and mine detection missions during the biennial Rim of the Pacific Exercise (RIMPAC) war games. The (2) started on June 19 and will run (3) Friday.
"There are a number of mechanical systems that work in those areas. (4) high-tech gadgets deployed by the military can’t (5) the natural skills of dolphins and lions," said Tom Lapuzza, spokesman for UN Navy’s Marine Mammal Program. Sea lions have "incredible good underwater (6) " and can dive down to 300 meters to catch a recovery line to a mine, he said. Dolphins use sonar to (7) mine.
Human beings have a long (8) of training animals to join the military. Horses have been the most widely-used animals (9) the recorded history of (10) . In early times, horses were used to (11) chariots or to (12) armored forces. With the development of modem weapons and motorized (13) , the use of horses for military purposes fell into (14) . (15) , horses were still used (16) by the German army during World War II for transporting (17) and equipment, including artillery.
During World War II, (18) with explosives strapped to their backs were used as anti-tank weapons. In other (19) , they were used for detecting mines. Some dogs were also used as messengers.
Other animals have also (20) in the military. Recorded history shows the use of elephants for military purposes as early as 1,100 B. C.. They were employed during World War II by both the Japanese army and the (21) .
There are records showing that over 100,000 reindeer were used by Finland to tow sleds during World War II. They carried the (22) to hospitals, brought supplies to the troops and moved heavy anti-tank weapons. It is well documented that oxen have been (23) used in war as improvised beasts of burden. During World War II, spiders were employed by the Allies to spin silk for (24) in cross-hairs on bomb scopes and other optical instruments. People also are finding that Vampire bats’ ability to use echolocation is very interesting as we (25) to learn how it works and it may benefit the army.

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