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【单选题】
自动控制系统的 能体现系统正常工作的响应速度:A.
稳定性
B.
快速性
C.
稳态特性
D.
准确性
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
【多选题】工件加工后在一定深度的表面内出现与基体材料组织不同的变质层。表面层材质变化可能是（ ）
A.
塑性变形或硬度变化
B.
微观裂纹
C.
残余应力、晶粒变化、热损伤区、微观组织变化以及化学性质及电特性的变化
D.
晶粒变化或微观组织变化
E.
热损伤区、微观组织变化以及化学性质及电特性的变化
F.
化学性质变化或电特性变化
【单选题】I was astonished that she________ do a thing like that.
A.
could
B.
might
C.
would
D.
should
【简答题】The public was astonished to know she_____the
Minister of the DefenseA. was being named B. has been named C. has been named as D. has being name as
【单选题】How did the speaker feel when she heard the news?
A.
She was satisfied.
B.
She was annoyed.
C.
She was astonished.
D.
She was relieved.
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