红细胞管型尿主要见于（）。

A.慢性肾盂肾炎

B.慢性肾炎

C.急性肾炎

D.肾结石

E.肾结核

A disk with a horizontal line through its center, equivalent to the summer load line, is called the（）.

A.deadrise mark

B.maximum alloable draft mark

C.pilmsoll mark

D.tonnage mark