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【单选题】
三氟甲烷(HFC-23)灭火剂属于()
A.
气溶胶灭火剂
B.
惰性气体灭火剂
C.
卤代烃灭火剂
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参考答案:
举一反三
【单选题】During the most ______ time in her career, she wrote five novels.
A.
profound
B.
productive
C.
prosperous
D.
plentiful
【简答题】Alice Walker makes her living by writing, and her poems, short stories, and novels have won many awards and fellowships for her. She was born in Eatonton, Georgia. She went to public schools there, an...
【单选题】程序段G72 P0035 Q0060 U4.0 W2.0 S500是(  )循环指令。
A.
端面粗加工
B.
精加工
C.
外径粗加工
D.
固定形状粗加工
【单选题】What does Jan Godley say about the managers in her company?
A.
They must spend some time with customers in the store.
B.
They must know the first names of all their staff.
C.
They must spend most of their time in their offices.
【单选题】程序段G72 P0035 Q0060 U4.0 W2.0 S500是()循环指令。
A.
精加工
B.
外径粗加工
C.
端面粗加工
D.
固定形状粗加工
【单选题】数控编程程序段G72P0035Q0060U4.0W2.0S500中,W2.0的含义是( )。
A.
Z轴方向的精加工余量
B.
X轴方向的精加工余量
C.
X轴方向的背吃刀量
D.
Z轴方向的退刀量
【简答题】Carson McCullers was said to touch William Fanlkner in writing, and her well-known novels are ______and______.
【单选题】程序段G72 P0035 Q0060 U4.0 W2.0 S500中,P0035的含义是( )。
A.
精加工路径的第一个程序段顺序号
B.
最低转速
C.
退刀量
D.
精加工路径的最后一个程序段顺序号
【判断题】(    )程序段G72 P0035 Q0060 U4.0 W2.0S500是端面粗加工循环指令,用于切除锻造毛坯的大部分余量。
A.
正确
B.
错误
【单选题】读取get方法传递的表单元素值的方法是( )
A.
$_GET["名称"]
B.
$GET["名称"]
C.
get["名称"]
D.
_get["名称"]
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