白细胞黏附功能缺陷（）
A. 低钙抽搐
B. 新生儿脐带延迟脱落
C. 口服脊髓灰质炎活疫苗可引起患儿肢体瘫痪
D. 扁桃体变小或缺如
E. 可自然痊愈
The author had trouble operating his VCR became ______.
A. he had neglected the importance of using the timer
B. the machine had far more technical features than necessary
C. he had set about using it without proper training
D. its operation was far more difficult than the designer intended it to be
关于发射式计算机断层的叙述，错误的是
A. ECT获得脏器三维图像
B. ECT不能进行断层显像
C. 是以引入体内的放射性药物为放射源
D. 基本原理与丁照相机相似
E. 从体外不同角度采集脏器中放射性药物分布信息
采用排水下沉方法施工的矩形盾构井，其沉井外围平面尺寸为35×20m，下沉深度20m，则该盾构井下沉的土方工程量为（ ）m3
A. 14000
B. 14280
C. 14350
D. 14700
微信支付 
支付宝支付