癌性肺不张可见()
A.鸟咀征
B.半影征
C.肺叶膨隆征
D.肺尖空气帽征
E.横S征
参考答案:E
It’s impossible for all the people to get jobs because _______of them are not fit for them.
A.none
B.all
C.not all
D.every one
“重击”试验干密度与含水率关系图中()对应的横坐标为最佳含水率。
A.A
B.B
C.C
D.D