手术麻醉期间导致胸膜腔内压升高的重要原因是()。
A.支气管痉挛
B.分泌物阻塞
C.通气量过小
D.肌松药使用
E.麻醉机活瓣故障
参考答案:A
In an interview with CNN, Premier Wen Jiabao emphasized that our government should let everyone live a happy life with ________ and a sense of security.
A.evidence
B.privilege
C.assessment
D.dignity
上颌铸造RPD支架大连接体断裂进行焊接,不宜选用的焊接方法是()
A.激光焊接
B.等离子弧焊接
C.电子束焊接
D.氩弧焊
E.银焊