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【单选题】
上图是执行粗车循环G73指令的刀具运动轨迹。C为整个循环起点,也是循环终点。指令中的∆w 和∆u分别表示的是()A.
X向精加工余量，Z向精加工余量
B.
Z向精加工余量，X向精加工余量
C.
每次循环X量，每次循环Z量
D.
以上都不对
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举一反三
【单选题】The efforts made by researchers __________ possible the cure of the novel coronavirus pneumonia.
A.
were made
B.
made
C.
made it
D.
were made it
【单选题】对二维数组 a 初始化错误的是( )。
A.
int a[2][3]={{1,2},{3,4}};
B.
.int a[][3]={1,2,3,4,5,6};
C.
int a[2][3]={{1,2},{3,4,5},{6,7}};
D.
int a[2][3]={{1},{3,4,5}};
【单选题】以下对二维数组 a 初始化正确的语句是
A.
int a[2][ ]={{0 , 1 , 2}, {3 , 4 , 5}};
B.
int a[ ][3]={{0, 1, 2}, {3, 4, 5}};
C.
int a[2][4]={{0, 1 , 2}, {3 , 4}, {5}};
D.
int a[ ][3]={{0, 1, 2}, { }, {3, 4}};
【单选题】What was your experience of buying masks during the novel coronavirus pneumonia epidemic?
A.
I was very happy to buy a lot of masks at a low price.
B.
The price is too expensive to buy.
C.
There are no masks on the market.
D.
Buying masks is like winning the lottery.
【单选题】【二维数组,初始化】 以下能对二维数组a进行正确初始化的语句是【 】
A.
int a[2][ ]={{1, 0, 1}, {5, 2, 3}};
B.
int a[ ][3]={{1, 2, 3}, {4, 5, 6}};
C.
int a[2][4]={{1, 2, 3}, {4, 5}, {6}};
D.
int a[ ][3]={{1, 0, 1}, {}, {1, 1}};
【简答题】the novel coronavirus pneumonia中文意思是?pneumonia单词中字母p发音吗?
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