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【简答题】
当主动脉狭窄或主动脉关闭不全时，患者血压会发生生什么变化，为什么?
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反馈参考答案：
举一反三
【判断题】The United States is the only country in the world that does not currently use the metric system of measurement.
A.
正确
B.
错误
【单选题】( ) is the only country in the world that occupies a whole continent.
A.
New Zealand
B.
Australia
C.
America
D.
Canada
【单选题】Criticism and self-criticism is necessary______ it helps us to correct our mistakes.
A.
in that
B.
in time
C.
in turn
D.
in effect
【单选题】办公室内,关于办公桌桌面上所摆放东西,下列说法不正确的是()
A.
当天或当时要处理的公文
B.
为方便使用而准备的各种笔具
C.
放置家人照片，显得温馨
D.
玻璃板下只放与工作有关的文字或数字资料
【单选题】Who is the only country artist nominated for Album of the Year?
A.
Kacey Musgraves
B.
Luke Combs
C.
Carrie Underwood
【单选题】It is necessary to make a status inquiry ____ your customer before the execution of the order.
A.
into
B.
about
C.
for
D.
after
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