第18题: [单项选择]The exhaust ports are located around the lower part of the cylinder liner, ()the products of combustion are driven by scavenging air. A. in which B. by which C. through which D. from which 参考答案:C
第23题: [单项选择]期门所在的肋间隙是() A. 第5 B. 第6 C. 第7 D. 第8 E. 第9 参考答案:B
第24题: [单项选择]患者,男,26岁,因交通事故造成面部外伤而来诊。检查见耳、鼻出血,并证实有脑脊液鼻漏,面部两侧不对称,右侧眶下区肿胀,右下眼睑肿胀、淤血,右侧下颌骨下垂,后牙早接触 如X线片显示右侧上颌骨骨折,骨折线横过鼻根、眶部,经颧额缝达翼突。正确的诊断是 A. Le Fort Ⅰ型骨折 B. Le FortⅡ型骨折 C. Le FortⅢ型骨折 D. 鼻骨骨折 E. 颧弓骨折 参考答案:C