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【单选题】
采用长度比尺 k l = 0.05 的模型,做弧形闸门闸下泄流实验,现测得模型下游收缩断面的平均流速 v m = 2m /s ,流量 Q m = 35L /s ,水流作用在闸门上的总压力 P m = 40N ,则原型闸门上的总压力 P p 等于( )。A.
0.8kN
B.
16kN
C.
320kN
D.
640kN
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皮皮学刷刷变学霸
举一反三
【单选题】The square in front of the supermarket is so limited that when going there, first of all, you should consider ______your car.
A.
parking
B.
where to park
C.
to park
D.
where parking
【单选题】The supermarket is _______ the street.
A.
in the opposite of
B.
out the opposite of
C.
on the opposite of
D.
at the opposite of
【单选题】A.Coffee is too expensive for the man.B.The supermarket is going to move away.###
A.
Coffee is too expensive for the man.
B.
The supermarket is going to move away.
C.
The man probably likes drinking coffee.
D.
The woman will stock up on coffee.
【多选题】Unit 4 C. Dictation Fill in the blanks of the following passage according to what you have heard. 04-ListeningB The average American housewife goes to the supermarket twice a week. On the average she ...
A.
spends
B.
to buy food
C.
for a while
D.
outside
E.
Frequently
【单选题】-The supermarket is ___ the post office.
A.
next from
B.
across to
C.
next to
D.
across in
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