新SSS200系统译码器面板保密码选择开关正确的英文符号是（）。A.PRLVACY

某金属和硝酸反应，已知参加反应的被还原的硝酸和参加反应的硝酸的物质的量之比为1∶6，若已知还原产物唯一，则还原产物为

A．N₂

B．N₂O

C．NO

D．NO₂

改错。

1.Each computer and each operator have been moved to the air-conditioned house.

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2.A woman with two children have gone to the Great Wall.

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3.This is one of the best novels that has appeared this year.

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4.The police has caught the murderer.

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5.Mathematics are the base of all other sciences.

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6.The United Nations are made up of more than 160 countries.

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7.Ours are a great socialist country.

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8.There stand a lamp, a vase and some books on the desk.

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9.There are two men in the room; the old are the young's father.

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10.The known are less exciting than the unknown.

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儿童长期缺乏锌可导致生长发育障碍。

离心泵切换启动备用泵时应确认电动机电流在额定值（），并且机泵运转（）。

关于新月体性肾炎肾脏病理改变，下列描述正确的是（）

A.Ⅰ型表现为IgG及C3呈颗粒样沉积于毛细血管壁

B.Ⅰ型表现为IgG及C3呈线条样沉积于毛细血管壁

C.Ⅱ型表现为IgA及C3呈颗粒样沉积于系膜区和毛细血管壁

D.Ⅱ型表现为IgM呈线条状沉积于毛细血管壁

E.Ⅲ型免疫病理表现为“满堂亮”