下列关于MRA采集方式的描述,哪些是正确的() A.包括二维法和三维法 B.二维法

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问题:

下列关于MRA采集方式的描述,哪些是正确的()

A.包括二维法和三维法 

B.二维法成像时间长,成像范围大,血流信号强 

C.二维法对慢速血流敏感 

D.三维法扫描时间短,成像范围小 

E.三维法对快速血流敏感

考点:放射医学技术(医学高级)放射医学技术综合练习放射医学技术综合练习题库
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在严重损伤引起的系统或器官功能障碍中,最先累及的是()

A.脑

B.肝

C.肺

D.肾

E.心

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肝火郁结,烦躁易怒,尿赤便秘治宜选

A.龙胆泻肝汤

B.左金丸

C.当归龙荟丸

D.泻青丸

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Murphy’s征出现在()。

A.急性化脓性胆管炎

B.急性胆囊炎

C.急性出血,坏死性胰腺炎

D.急性化脓性阑尾炎

E.绞窄性小肠梗阻

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国务院,即中央人民政府,是我国最高权力机关的(),是最高国家行政机关。

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President Bush arrived in Washington and forged ahead with an ambitious agenda- (1) tax cuts, vast changes in federal social programs, expansions of executive power and (2) broad remaking of energy and education policies.
Claiming a mandate by simply declaring (3) existence, his early successes dazzled his critics. With guru Karl Rove directing the (4) , Bush won a stunning series of political victories.
He muscled his agenda through (5) friendly Congress, and gained seats for his party in the 2002 midterm elections. (6) biggest triumph came in 2004, when he won a second term despite a (7) unpopular war.
The "permanent" Republican majority he and Rove envisioned even seemed attainable (8) Bush plunged himself into his most ambitious legislative effort yet: a partial privatization (9) Social Security.
But the president who boasted about "political capital" in the heady (10) after his re-election now faces the worst of political fates as he enters (11) final year in office: borderline irrelevance.
The president’s second term has (12) defined by legislative paralysis, marked by record-low approval ratings, presidential candidates who are (13) from his shadow, and a lingering war that’s sapping his remaining reservoirs of (14) .
As he enters his final year in office with the war continuing, Republican (15) for president bolting from his shadow, and his party back in the minority (16) Congress, he is politically weakened, an early entry into lame-duck status.
And the (17) Washington atmosphere he hoped to cure is just as nasty as it was (18) he came to office seven years ago.
"lie’s left our political institutions much (19) troubled than they were before," said Thomas E. Mann, a senior fellow at (20) Brookings Institution, a Washington-based think tank. "He didn’t create the ideological polarization, but he magnified it. \

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