皮皮学，免费搜题
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【单选题】
汽压控制对象的外部扰动是指:A.
电网负荷变化的扰动
B.
给的扰动
C.
电网频率的扰动
D.
给煤量扰动
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】m A cquired I mmune d eficiency S yndrome ( 后天性免疫缺陷综合症 ). m It is a disease that limits the body’s ability to fight _ 1_ _感染. A person with has a very weak _ _2_ _ _ _3 _(免疫系统), turning normally...
【简答题】GB/T321-1980规定数列作为优先数系；R5系列中的优先数，每增加个数，则数值增加10倍。
【单选题】听力原文：W: Why, Peter! You are sweating heavily. Where have you been? M: I've just been to the Fitness Centre to learn Street dance. W: What is street dance? M: Street dance is a newly emerged way of kee...
A.
How to lose weight.
B.
Street dance.
C.
Exercising in a gym.
D.
Dancing music.
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