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问题 单项选择题

如为胆管下端癌(下段癌)其治疗是

A．胆管局部切除
B．胆总管空肠Roux-Y胆道重建术
C．胆囊空肠改良式Roux-Y吻合术
D．胰十二指肠切除术
E．胆囊空肠Roux-Y型吻合术

答案

参考答案：D

单项选择题 A1/A2型题

如图所示，基线下方三尖瓣口收缩期反流的频谱速度为3.1m/s，提示肺动脉高压程度为（）

A.轻度

B.中度

C.重度

D.轻微

E.无
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单项选择题

Electronic mail and filing permit a user to compose and transmit a message on an office (71) system. In the early 1970s, the ARPANET community developed a number of such systems which have been heavily used. Through standard message format (72) , several hundred different computers and electronic mail interfaces are specification of how (73) and return addresses should appear on envelopes and which sizes are allowable for envelopes. In the electronic message world, they describe what (74) of characters are required at the (75) of a message to identify the sending and receiving mailboxes.

A．end

B．last

C．initiation

D．beginning
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