进展期中央型肺癌肿瘤瘤体的X线征象为()
A．肺门肿块阴影
B．支气管腔内结节
C．支气管管腔狭窄
D．阻塞性支气管扩张
E．支气管管腔增厚
参考答案：A
非节奏流水施工的特点有（）。
A．各施工过程在各施工段的流水节拍均不相等
B．相邻施工过程的流水步距不尽相等
C．专业工作队数等于施工过程数
D．有的施工段可能有空闲时间
E．各专业工作队能够在施工段上连续作业
用所给单词的适当形式填空。
1. Today is my brother Jim's ________ (nine) birthday.
2. Look! The father is ________ (make) a toy for his son.
3. There are three ________ (lab) in our school.
4. My mother would like ________ (buy) a new sweater for me.
5. My sister says she likes ________ (rain) days.
