肺部病灶CT值的测量选用病灶中间层面,其原因是()
A.容易测量
B.病灶范围比较大
C.是病灶的实质所在
D.减少容积效应影响
E.此层面增强效果好
参考答案:D
It was now clear that no such weapons were manufactured and none been found .
A.was found
B.were founded
C.has been found
D.have been founded
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性()
A.A
B.B
C.C
D.D