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【单选题】
在心动期中,心室内压力达最高值在:( )A.
心房收缩期末
B.
等容收缩期末
C.
快速射血期
D.
等容舒
E.
心室充盈期末
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皮皮学刷刷变学霸
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【单选题】下列关于新车交付检验（PDS） 的说法正确的是（ ）。
A.
车辆在厂商发运前在PDS时验证其状态。
B.
PDS在车辆运达用户后实行。
C.
为了防止运输中发生问题，车辆在离厂前进行了多种保护措施。PDS的车辆状态的恢复步骤可以使车辆处于正常工作状态。
D.
PDS是将各分散运输的零件装配好，使车辆进入工作状态。
【简答题】Frotunately, I don't mind ________ at a cheap hotel or a motel. Finally, I try to plan money for meals and other sightseeing expenses.
【单选题】—Smart phones are more and more popular now. —So they are. But they still ________ too much.
A.
pay
B.
cost
C.
take
D.
spend
【单选题】By 'crisis of comprehension' the author means that many students ______.
A.
are too much. concerned with grades
B.
fail to understand the real goal of education
C.
lack proper practice in phonic and grammar drills
D.
are unable to understand what they read, although they do reasonable well on standardized tests
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