CT用X线球管的最大特点是()
A.与常规X线管结构相同
B.外形尺寸比常规X线管大得多
C.不使用固定阳性X线管
D.额定功率比常规X线管大
E.只有单一小焦点
参考答案:D
有一生物的排尿量少,不排汗,则此生物可能生活在( )
A.草原地带
B.沙漠地带
C.温暖地带
D.寒冷地带
When I ___ in the kitchen, nothing made me feel better than preparing the eggs and serving them just the way the customers wanted.
A.worked out
B.figured out
C.helped out
D.found out