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问题 单项选择题

某男，28岁，因车祸后胸痛，气促就诊。体查：神志清，呼吸36次/分，脉搏120次/分，血压120/70mmHg。右前侧胸壁明显塌陷，吸气时内陷，呼气时鼓出，听诊有大量痰鸣音。无创血氧饱和度测定75%。该病例最佳处理措施是()

A．立即给予止痛药并上氧

B．气管切开，清除呼吸道分泌物

C．右胸闭式引流术，上氧

D．立即气管内插管，上呼吸机改善缺氧

E．清除呼吸道分泌物，局部加压包扎，必要时气管插管或切开使用呼吸机

答案

参考答案：E

填空题

Beijing: The United States and North Korea had their first (1) in four months here this afternoon as part of the (2) negotiations on how to end North Korea’s nuclear program, but diplomats played clown prospects for (3) . The talks are at the Diaoyutai (4) , a sprawling, garden-filled (5) in western Beijing, with negotiators gathering around a giant hexagonal table built to (6) the six delegations. The Chinese placed the Americans and the North Koreans in (7) , which may have facilitated the (8) between Mr. Kelly and Mr. Kim, which took place (9) in the afternoon session. The two spoke for 30 minutes, two Asian diplomats (10) . The early indications of how the talks are going (11) . A South Korean who took part in the meetings described North Korea as "willing to (12) through dialogue." Chinese officials also put a (13) on the talks. "I heard talks this morning and this afternoon were very successful," the Foreign Minister, Li Zhaoxing, told delegates (14) . But Japanese and Russian participants were (15) . The Russian (16) , Aleksandr Losyukov, described the negotiations as (17) . "So far, the countries have put forward a number of (18) , which are (19) the development of these talks," he told Russian reporters in Beijing. "I would not say that I am feeling (20) ."
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单项选择题

肾血管平滑肌脂肪瘤在B超和CT的表现分别为（）

A.B超较强回声，平扫CT值为正值

B.超检查中表现为较强回声，而CT检查可见脂肪组织的低于水密度的病灶，通常CT值为负值。此特点是诊断肾血管平滑肌脂肪瘤最主要的依据。

C.B超较强回声，平扫CT值为负值

D.B超较低回声，平扫CT值为正值

E.B超为无回声，平扫CT值为负值
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