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【单选题】
网络中某些节点的功率是由两侧流动,这种节点称为( )。A.
电压分点
B.
电流分点
C.
功率分点
D.
电抗分点
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举一反三
【单选题】子程序嵌套是指( ) (SIEMENS系统)。
A.
同一子程序被连续调用
B.
在主程序中调用子程序，在子程序中可以继续调用子程序
C.
在主程序中调用不同的子程序
D.
同一子程序可以被不同主程序多重调用
【单选题】Each sentence below contains a comma splice. Select the answer that corrects the comma splice without creating any new errors. Note: Check the punctuation carefully. · Most students attend a learning ...
A.
Most students who attend a learning skills class, improve their grades.
B.
The grades and skills of most students improve after they attend a learning skills class.
C.
Because most students attend a learning skills class their grades and skills improve.
【单选题】Most students in grades K-12 attend school for 6 to 7 hours a day, 180 days per year. Some schools offer extended learning by adding extra time to the school day or increasing the length of the school...
A.
demand larger school budgets
B.
make more money out of the students
C.
help take care of young students
D.
improve students academically
【单选题】For most students, the earnings they give up to attend college are
A.
a minor cost when compared to the costs of tuition, room and board, and the like.
B.
the single largest cost of their education.
C.
about equal to the costs of room and board at college.
D.
not considered true costs by an economist.
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