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【单选题】
while循环语句中,while后一对圆括号中表的值决定了循环体是否进行,因此,进入 while循环后,一定要有能使此表的值变为( )的操作,否则,循环将会无限制地进行下去。
A.
0
B.
1
C.
成立
D.
2
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参考答案:
举一反三
【判断题】数控机床主传动系统是指数控机床主运动传动系统。()
A.
正确
B.
错误
【单选题】Which of the following statements is NOT TRUE about P5+1 countries?
A.
P5 +1 countries include Japan, France, Russia, the United Kingdom and the United States plus Germany.
B.
The P5+1 countries are a group of world powers who are working on the Iran Nuclear Deal .
C.
The countries include the five permanent members of the United Nations security council with the addition of Germany.
D.
The Joint Comprehensive Plan of Action (JCPOA) was reached between Iran and P5+1 in 2015.
【简答题】小题1:.The United Kingdom, which has four countries with one government, is off the northwest coast of c____________ (大陆) Europe. 小题2:. Paris, s____________ (位于) in the river Seine, is the capita l and ...
【单选题】电脑、手机已经很普及了,谁还愿意写信呢? 问:从这句话我们可以知以知道什么?
A.
有电脑、手机的人很多
B.
没有电脑或手机的人常常写信
【单选题】数控机床运动轨迹分类点位控制运动数控机床 、( )和连续控制运动数控机床。
A.
数控车床
B.
数控铣床
C.
直线控制运动数控机床
D.
加工中心
【单选题】按数控机床运动轨迹分类点位控制运动数控机床、( )和连续控制运动数控机床。
A.
直线控制运动数控机床
B.
普通机床
C.
数控车床
D.
数控铣床
【判断题】运动时的排汗量越多,表明运动量越大。()
A.
正确
B.
错误
【单选题】数控机床的坐标运动是( )。
A.
主运动
B.
副运动
C.
进给运动
D.
旋转运动
【简答题】Which countries do you think are a major source of the products in the box? Match each product (a–d) to the place you think is its major source (1–4).
【单选题】Which of the following statements is NOT TRUE about P5+1 countries?
A.
The countries include the five permanent members of the United Nations security council with the addition of Germany.
B.
P5 +1 countries include Japan, France, Russia, the United Kingdom and the United States plus Germany.
C.
The P5+1 countries are a group of world powers who are working on the Iran Nuclear Deal.
D.
The Joint Comprehensive Plan of Action (JCPOA) was reached between Iran and P5+1 in 2015.
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