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【单选题】
室内有两个噪声源,同时工作时测得总声压级为70 dB,当其中一个声压级停止时,测得总声压级为69dB,则另一声源的声压级为( )。
A.
71 dB
B.
63 dB
C.
69dB
D.
76dB
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参考答案:
举一反三
【单选题】You went to the post office yesterday,_____you?
A.
didn’t
B.
does
C.
don’t
D.
do
查看完整题目与答案
【单选题】Some students can’t go to the show ______ the exam this week.
A.
because
B.
because of
C.
if
D.
so
查看完整题目与答案
【单选题】Students can’t be made ____________ all day.
A.
study
B.
to study
C.
studying
D.
of study
查看完整题目与答案
【简答题】D10 The person prefers______. A)hard-boiled eggs B)fried-eggs C)boiled eggs
查看完整题目与答案
【多选题】以下哪些说法是正确的
A.
只要没有与小三结婚,就不算违反一夫一妻制的相关法律规定。
B.
有配偶者婚内出轨不是适用离婚损害赔偿的法定情形之一。
C.
我国法定的最低结婚年龄是男20岁,女18岁。
D.
结婚必须男女双方完全自愿,哪怕是双方父母也不得加以干涉。
查看完整题目与答案
【单选题】With so much noise outside, the students can’t _____ their homework.
A.
concentrate on
B.
depend on
C.
keep on
D.
put their hands on
查看完整题目与答案
【单选题】You went to the wrong shop. You ought _________ to the shop next to the cinema but you went to the shop by the Post Office.
A.
go
B.
to go
C.
to have gone
D.
have gone
查看完整题目与答案
【单选题】You went to the post office yesterday,_____you?
A.
didn’t
B.
does
C.
don’t
D.
X
查看完整题目与答案
【单选题】The person prefers .
A.
hard-boiled eggs
B.
fried-eggs
C.
boiled eggs
查看完整题目与答案
【单选题】You went to the post office yesterday, __________?
A.
do you
B.
don’t you
C.
did you
D.
didn’t you
查看完整题目与答案
相关题目:
【单选题】You went to the post office yesterday,_____you?
A.
didn’t
B.
does
C.
don’t
D.
do
查看完整题目与答案
【单选题】Some students can’t go to the show ______ the exam this week.
A.
because
B.
because of
C.
if
D.
so
查看完整题目与答案
【单选题】Students can’t be made ____________ all day.
A.
study
B.
to study
C.
studying
D.
of study
查看完整题目与答案
【简答题】D10 The person prefers______. A)hard-boiled eggs B)fried-eggs C)boiled eggs
查看完整题目与答案
【多选题】以下哪些说法是正确的
A.
只要没有与小三结婚,就不算违反一夫一妻制的相关法律规定。
B.
有配偶者婚内出轨不是适用离婚损害赔偿的法定情形之一。
C.
我国法定的最低结婚年龄是男20岁,女18岁。
D.
结婚必须男女双方完全自愿,哪怕是双方父母也不得加以干涉。
查看完整题目与答案
【单选题】With so much noise outside, the students can’t _____ their homework.
A.
concentrate on
B.
depend on
C.
keep on
D.
put their hands on
查看完整题目与答案
【单选题】You went to the wrong shop. You ought _________ to the shop next to the cinema but you went to the shop by the Post Office.
A.
go
B.
to go
C.
to have gone
D.
have gone
查看完整题目与答案
【单选题】You went to the post office yesterday,_____you?
A.
didn’t
B.
does
C.
don’t
D.
X
查看完整题目与答案
【单选题】The person prefers .
A.
hard-boiled eggs
B.
fried-eggs
C.
boiled eggs
查看完整题目与答案
【单选题】You went to the post office yesterday, __________?
A.
do you
B.
don’t you
C.
did you
D.
didn’t you
查看完整题目与答案
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