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【单选题】
Python 通常是一行写完一条语句,但如果语句很长,我们可以使用( )符号来实现多行语句。A.
/
B.
\
C.
+
D.
-
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举一反三
【简答题】柚木实心地板,规格为910毫米*122毫米*18毫米
【单选题】Which of the following best expresses the essential information in the highlighted sentence? Incorrect answer choices change the meaning in important ways or leave out essential information.
A.
Modern empiricism attempts to invent a theory of the whole universe.
B.
Modern empiricism attempts to build a system of philosophies.
C.
Modern empiricism attempts to tackle certain problems one at a time.
D.
Modern empiricism attempts to develop a powerful logical techniqu
【简答题】柚木实心地板,规格为910毫米*122毫米*18毫米
【简答题】According to Yosma, what don't teachers do in happiness classes?
【单选题】Which of the following best expresses the essential information in the highlighted sentence? Incorrect answer choices change the meaning in important ways or leave out essential information.
A.
President Hoover did no recognize the seriousness of the situation right away, and did not offer relief to the poverty- stricken citizens when he should have.
B.
President Hoover thought that the Great Depression was a mere passing incident in the history, and believed that things will take a better turn within two months.
C.
President Hoover did not offer relief to the poverty-stricken because he believed in individualism, and also assumed that the depression would not last long.
D.
President Hoover saw that the country's economy was in danger, but his firm belief in individualism prevented him from providing help to those in need of a relief.
【单选题】设m=3i+5j+8k,n=2i-4j-7k,p=5i+j-4k,若a=4m+3n-p,则向量a 在x轴上的投影和在 y轴上的分向量分别是
A.
13i，7j
B.
13i，7
C.
13，7j
D.
13，7
【简答题】(2015·连云港)潜水员潜水时呼出的气泡在水面下上升的过程中,体积不断变大.关于气泡所受压强和浮力的变化情况下列说法正确的是 ( ) A.压强变大,浮力变大 B.压强变大,浮力变小 C.压强变小,浮力变大 D.压强变小,浮力变小
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