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【多选题】
关于以下说法,错误的有()A.
评价公用事业投资方案的经济效果时，一般采用效益/费用比率
B.
一个项目在整个计算期内年收益的现值之和除以年费用的现值之和的指标被称为效益/费用比率
C.
评价公用事业投资方案的经济效果时，一般采用投资收益率
D.
一个项目在整个计算期内年收益的现值之和除以年费用的现值之和的指标被称为投资利润率
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皮皮学刷刷变学霸
举一反三
【单选题】He dressed himself quickly, _____ his schoolbag and went to school.
A.
carrying
B.
to carry
C.
carried
D.
carries
【单选题】He dressed quickly, _______ hurriedly, grabbed his briefcase and hurried off down the hotel corridor.
A.
shave
B.
shaving
C.
to shave
D.
shaved
【单选题】— You’d better not judge a person _____ his appearance. —I know all the people dressed _____ rags are not beggars.
A.
in; in
B.
by; by
C.
in; by
D.
by; in
【单选题】. He dressed himself quickly and ___________ his schoolbag, went to school.
A.
carried
B.
to carry
C.
carrying
D.
Carries
【单选题】Out of the crowded bus ,who was dressed in a black suit and waved to a woman.
A.
a tall man in his thirties stepped
B.
stepped a tall man in his thirties
C.
did a tall man in his thirties step
D.
did a tall man step in his thirties
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