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【单选题】
The figure shows a position-versus-time graph of the motion of a car. Describe the velocity and acceleration during segments OA, AB, and BC. Which item is Not correct?【图片】A.
In segment OA, the velocity is positive and constant.
B.
In segment OA, there is no acceleration.
C.
In segment AB, the velocity is increasing.
D.
In segment AB, there must be acceleration.
E.
In segment BC, the velocity is not constant.
F.
In segment BC, this velocity is greater in magnitude than the velocity in segment OA.
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【单选题】Although she tried her best to make her work______, yet she failed in the end.
A.
complete
B.
well
C.
perfect
D.
good
【单选题】关于脑复苏，以下哪项是错误的
A.
降温时间越早越好
B.
降温的深度越低越好
C.
物理降温必需和药物降温同时进行，才能达到降温的目的和要求
D.
为防止复温后脑水肿，复温要缓慢
【单选题】Although her mind was in a ______, she tried to stay calm for the sake of her children.
A.
solace
B.
yew
C.
capillary
D.
turmoil
【单选题】关于脑复苏,以下哪项是错误的
A.
降温时间越早越好
B.
降温的深度越低越好
C.
物理降温必需和药物降温同时进行,才能达到降温的目的和要求
D.
为防止复温后脑水肿,复温要缓慢
E.
降低颅内压
【单选题】She tried hard to keep calm in face of the students, but the sweat on her forehead _____ her ____.
A.
gave; away
B.
tuned; down
C.
showed; out
D.
shut; off
【单选题】Although she tried her best to make her work _______, yet she failed in the end.A．completeB．well
A.
83. Although she tried her best to make her work _______, yet she failed in the end. A．complete
B.
well
C.
perfect
D.
Good
【单选题】关于脑复苏，以下哪项是错误的
A.
血压应维持在正常或稍高于正常水平
B.
应防止血压过高而加重脑水肿
C.
应防止血压过低而加重脑及其他脏器组织缺血、缺氧
D.
只用物理降温的方法达到降温的目的和要求
E.
防治脑水肿、降低颅内压，是脑复苏的重要措施
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