皮皮学，免费搜题
登录
搜题
【单选题】
已知液压泵转速为1000r/min,排量为160ml/r，额定压力为30MPa，实际输出流量为150L/min,泵的总效率为0.87，则：额定工况下，泵的输出功率为（ ）
A.
99.09kw
B.
65.25kw ‍
C.
75kw ‍
D.
86.21kW
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
.
..
皮皮学刷刷变学霸
举一反三
【多选题】高压丙烯洗涤塔投用前需要确认的条件有（）。
A.
塔底再沸器投用正常
B.
仪表投用正常
C.
塔顶冷凝器投用正常
D.
投用塔底第二闪蒸管线的套管蒸汽
查看完整题目与答案
【多选题】仪器再确认的条件( )。
A.
仪器经过大修
B.
趋势分析中发现有系统性偏差
C.
使用一段时间后
D.
仪器 经过更换或重大变更
查看完整题目与答案
【简答题】学校周一升国旗大约用了5( )。
查看完整题目与答案
【单选题】The Australian painter is contented with every exhibit on the show, with the indigenous ______ with the exotic.
A.
as many as
B.
as far as
C.
as long as
D.
as much as
查看完整题目与答案
【单选题】The author gives the example of airplane to show that ______.
A.
the use of plane does harm to the whole world
B.
new technology enhances communication between countries
C.
new communication means may not save the world from wars
D.
air force became more important than ground troops in wars
查看完整题目与答案
【多选题】关于接打电话,下列做法正确的有:
A.
拨打电话应选择恰当的拨打时间，以不影响对方工作和休息为宜。
B.
拨通电话后，先问候对方，然后主动自我介绍，再进行交谈；电话突然中断，由接听方立即重拨，并向主叫方说明情况。
C.
拨错电话，应向对方道歉；结束通话时，以接听方或尊者先挂断为宜。
D.
接听电话应在铃响3声内拿起电话，主动问好；如果接听较迟，先表示歉意；接听电话时，温和应答；如遇对方误拨的电话，应耐心说明，不可恶语相加；如替他人接听，应做好记录并及时转达。
查看完整题目与答案
【单选题】If a teacher gives commands in English and asks students to show understanding by action or gestures， he/she is most probably using__________.
A.
Communicative Approach
B.
Audio-lingual Approach
C.
Grammar Translation Method
D.
Total Physical Response
查看完整题目与答案
【单选题】In the second paragraph, the author gives two examples to show ______.
A.
the development of attitudes is most important
B.
people's behavior. can be shaped by direct or indirect experience
C.
conscious instruction is important in shaping people's behavior
D.
unpleasant experience leaves a greater impression on people
查看完整题目与答案
【单选题】The writer gives the example of national defense in paragraph 2 in order to show that ______.
A.
there will be no safety if there is no national defense
B.
all the people should be responsible for national defense
C.
a public good is a shared benefit for the whole society
D.
some public goods are more important than others
查看完整题目与答案
【单选题】The writer gives the example of watching TV to show that ______．
A.
watching TV adds to the daily confusion
B.
watching TV can remove confusion
C.
TV viewers remember everything they have watched
D.
all people enjoy watching TV
查看完整题目与答案
相关题目：
【多选题】高压丙烯洗涤塔投用前需要确认的条件有（）。
A.
塔底再沸器投用正常
B.
仪表投用正常
C.
塔顶冷凝器投用正常
D.
投用塔底第二闪蒸管线的套管蒸汽
查看完整题目与答案
【多选题】仪器再确认的条件( )。
A.
仪器经过大修
B.
趋势分析中发现有系统性偏差
C.
使用一段时间后
D.
仪器 经过更换或重大变更
查看完整题目与答案
【简答题】学校周一升国旗大约用了5( )。
查看完整题目与答案
【单选题】The Australian painter is contented with every exhibit on the show, with the indigenous ______ with the exotic.
A.
as many as
B.
as far as
C.
as long as
D.
as much as
查看完整题目与答案
【单选题】The author gives the example of airplane to show that ______.
A.
the use of plane does harm to the whole world
B.
new technology enhances communication between countries
C.
new communication means may not save the world from wars
D.
air force became more important than ground troops in wars
查看完整题目与答案
【多选题】关于接打电话,下列做法正确的有:
A.
拨打电话应选择恰当的拨打时间，以不影响对方工作和休息为宜。
B.
拨通电话后，先问候对方，然后主动自我介绍，再进行交谈；电话突然中断，由接听方立即重拨，并向主叫方说明情况。
C.
拨错电话，应向对方道歉；结束通话时，以接听方或尊者先挂断为宜。
D.
接听电话应在铃响3声内拿起电话，主动问好；如果接听较迟，先表示歉意；接听电话时，温和应答；如遇对方误拨的电话，应耐心说明，不可恶语相加；如替他人接听，应做好记录并及时转达。
查看完整题目与答案
【单选题】If a teacher gives commands in English and asks students to show understanding by action or gestures， he/she is most probably using__________.
A.
Communicative Approach
B.
Audio-lingual Approach
C.
Grammar Translation Method
D.
Total Physical Response
查看完整题目与答案
【单选题】In the second paragraph, the author gives two examples to show ______.
A.
the development of attitudes is most important
B.
people's behavior. can be shaped by direct or indirect experience
C.
conscious instruction is important in shaping people's behavior
D.
unpleasant experience leaves a greater impression on people
查看完整题目与答案
【单选题】The writer gives the example of national defense in paragraph 2 in order to show that ______.
A.
there will be no safety if there is no national defense
B.
all the people should be responsible for national defense
C.
a public good is a shared benefit for the whole society
D.
some public goods are more important than others
查看完整题目与答案
【单选题】The writer gives the example of watching TV to show that ______．
A.
watching TV adds to the daily confusion
B.
watching TV can remove confusion
C.
TV viewers remember everything they have watched
D.
all people enjoy watching TV
查看完整题目与答案