皮皮学，免费搜题
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【简答题】
能够保证发动机在 、 和 都达到最佳的点火提前角被称为最佳点火提前角。
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】三个主应力为100MPa，-50MPa，0.5 MPa，其第一、第二、第三主应力分别为
A.
100MPa,-50MPa ， 0.5 MPa
B.
100MPa,0.5MPa ， -50 MPa
C.
0.5MPa ， 100MPa,-50MPa
D.
-50MPa ， 0.5MPa ， 100MPa
【单选题】The boy’s body was covered with a national flag, _____________.
A.
left his face exposed ( 暴露 )
B.
to have his face exposed
C.
leaving his face exposing
D.
leaving his face exposed
【简答题】认识房地产要素后,你对不动产权属证书还有什么疑问?对其中涉及到的要素还有什么问题?请拓展你的思维,提出尽可能多的问题。
【简答题】The soldier rushed into the cave, and his right hand held a gun, his face was covered with sweat.
【单选题】The boy's body was covered with a national flag, ____.
A.
left his face exposed
B.
to have his face exposing
C.
leaving his face exposing
D.
leaving his face exposed
【简答题】将汇编应用源程序翻译成目标程序的过程称为 过程,产生的目标文件扩展名为 ,将目标文件转换成可执行文件的过程称为 过程,产生的可执行文件扩展名为 。
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