Attention is called to the fact in many cases pipelines are not buried and charted depth may be decreased()up to teo meters.
A.with
B.by
C.on
D.in
参考答案:B
Attention is called to the fact in many cases pipelines are not buried and charted depth may be decreased()up to teo meters.
A.with
B.by
C.on
D.in
参考答案:B