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【判断题】
GIF类型的图片本身可具有动画效果，在PowerPoint放映显示动画。( )A.
正确
B.
错误
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举一反三
【单选题】工业反应过程的设计优化，是指在规定的约束范围内，寻找一组决策变量，使反应过程的优化目标函数（如转化率、收率等）达到极值，对于设计优化，下述四项内容中正确合理的是（）。
A.
反应器形式、结构和尺寸的选择
B.
反应器操作方式、反应工艺操作条件的选择
C.
反应器形式、结构、尺寸、操作方式和工艺操作条件的选择
D.
反应器形式、结构、尺寸、操作控制、原料质量、操作方式的选择
【单选题】As soon as Eric set his foot on the new strange land, he began to look at everything there with ________. [ ]
A.
accuracy
B.
influence
C.
curiosity
D.
emergency
【简答题】We have to look at everything ___ an international perspective.
【单选题】— Look! Everything here is under construction. — What's the pretty small house that ____for? [ ]
A.
is being built
B.
has been built
C.
is built
D.
is building
【单选题】Modern medical advances ______ the average life expectancy by several years.
A.
expanded
B.
spread
C.
extended
D.
enlarged
【单选题】One of the great advances in modern technology has been the invention of computers. They are already widely used in industry and in universities and the time may come when it will be possible for ordi...
A.
mathematics
B.
statistics
C.
medical sciences
D.
all of the above
【简答题】C 语言中要求操作数必须是整数的运算符是________
【简答题】We have to look through everything.
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