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【单选题】
Which of the following statements regarding human capital is INCORRECT?A.
Human capital is the accumulated skill and knowledge of human beings.
B.
Education is the only vehicle for the creation of human capital because training simply reinforces what has already been learned.
C.
The accumulation of human capital is the source of both increased productivity and technological advance.
D.
Writing and mathematics, the most basic of human skills, are crucial elements in economic progress.
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【单选题】在多元线性回归模型中,某自变量Xi的偏回归系数为负数,这意味着
A.
Xi与目标变量负相关
B.
Xi与目标变量正相关
C.
Xi与目标变量之间的相关关系不能简单判定
D.
Xi与目标变量无关
【单选题】Shopping by television will never take ____ place of shopping in stores, as many experts say, because many people find shopping at a store ____ great enjoyment. [ ]
A.
/; a
B.
the; a
C.
a ; the
D.
a; /
【单选题】She is such a teacher that she always stays late for students' assignments (作业).
A.
mean
B.
conscientious
C.
frivolous
D.
straightforward
【单选题】Many experts hold the view _______ protection awareness is _______ the key to better environment lies.
A.
that; where
B.
which; in which
C.
which; where
D.
that; in which
【简答题】幼儿教师培训的课程主要有()。 A.必修课和选修课 B 专业课和实践课 C 专业课和必修课 D理论课和实践课
【简答题】采用牵引变流器直流环节辅助供电模式时,经过处理后可得到( )和( )两路电源,为列车各设备供电。A. 三相A.C. 220V、D.C. 110V B. 三相A.C. 380V、D.C. 150V C. 三相A.C. 380V、D.C. 110V D. 三相A.C. 220V、D.C. 150V
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