- 卤代烃
- 共1238题
In the author's opinion, what is most important in shaping a generation
A.Peace and prosperity.
B.Unfavorable conditions.
C.A world without megachanges.
D.the baby boom.
正确答案
B
解析
暂无解析
The generation of Americans being talked about refers to those people ______.
A.who are the first of this century to mature
B.who could meet the stiffest of challenges
C.who have matured in peace and prosperity
D.who remember the assassinations of Robert Kennedy and Martin Luther King, Jr
正确答案
C
解析
暂无解析
急性尿潴留病因中,属于机械性梗阻的是
正确答案
解析
尿潴留分机械性和动力性两类。机械性最常见,如:良性前列腺增生前列腺肿瘤,膀胱颈肿瘤,尿道畸形,尿道结石。
诊断膀胱肿瘤最可靠的方法是
正确答案
解析
膀胱镜检查可以观察肿瘤大小,形态,数目,浸润程度。活检可以确定良性,恶性。
患者,男,64岁。突发心悸4小时就诊。 心电图示:P波消失,代之以f波,心室 率130次/分,节律绝对不规则。为减慢S心室率,应选择的药物是
正确答案
解析
急性房颤症状明显者注射β受体阻断剂、钙通道阻滞剂,无效改用电复。根据P波消失,代之以f波,心室率130次/分,节律绝对不规则等特点首先考虑房颤。
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