FTP的作用可以完成文件传输，将远程计算机的文件拷贝到自己的计算机上被称为（）。

弱酸性或弱碱性药物的pK都是该药在溶液中（）

A.90%离子化时的pH

B.80%离子化时的pH

C.50%离子化时的pH

D.80%非离子化时的pH

E.90%非离子化时的pH

患者男，40岁，因“咳嗽、胸痛1个月，发热、腹部不适2周，体重下降1周”来诊。1个月前感冒后咳嗽、胸痛，胸痛常与呼吸、咳嗽、变换体位有关。2周前发热，体温37.4～37.8℃，伴乏力，上腹部闷胀。近1周体重下降、消瘦。查体：T37.4℃，P80次/min，R24次/min，BP105/60mmHg；胸骨左缘第3、4肋间闻及心包摩擦音。

医师进行心包穿刺的目的是（）。（提示2周后患者出现呼吸困难；超声心动图：可见液性暗区。医师考虑进行心包穿刺。）

A.缓解症状

B.调节心率

C.纠正低电压

D.安慰治疗

E.各种实验室检查，确定病因

F.心包腔内给予抗菌或化学治疗药物

已知：

下列判断正确的是    (    )

A．氢气的燃烧热：△H="-241.8" kJ/mol

B．相同条件下，充分燃烧1 mol H₂(g)与1 molS(g)的混合物比充分燃烧1 molH₂S (g)放热多20.1 kJ

C．由①②知，水的热稳定性小于硫化氢

D．②中若生成固态硫，△H将增大

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. \

汽轮机叶片损坏的原因有（）

A.外来杂物造成叶片损坏

B.汽缸内固定零部件脱落造成零部件损坏

C.轴瓦损坏、胀差超限、大轴弯曲以及强烈振动造成动静摩擦，使叶片损坏

D.水冲击造成叶片损坏