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问题 单项选择题 A1/A2型题

缩窄性心包炎最常见的临床表现（）。

A.微热、盗汗

B.胸前疼痛、干咳

C.心界扩大明显

D.呼吸困难、胸水

E.颈静脉怒张、肝硬化、腹水

答案

参考答案：E

单项选择题

非金属排水管道的管材直段挠度不大于( )。

A．10‰
B．20‰
C．30‰
D．40‰
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单项选择题

What is the point the speaker is trying to make about technology development a. A mature technology requires less innovation. b. Technical evolution is close to maturation in certain fields. c. New types of energy are expected to mature in the near future. d. Nanomaterials or photonics and carbon nanotubes are environmentally friendly.
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