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【多选题】
对方程式赛车F1描述正确的是()。A.
方程式赛车级别最高的
B.
最昂贵的
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】成年人P-R间期正常值为 ( )
A.
0.05~0.20s
B.
0.12~0.20s
C.
0.08~0.20s
D.
0.09~0.22s
E.
0.15~0.25s
【单选题】The author suggested that people should eat more fruits, vegetables, and plant-based foods, eat less high-fat, high-calorie foods with insufficient nutritional value, stop smoking, exercise often and ...
A.
Y
B.
N
C.
NG
【单选题】Reforestation is forbidden in order not to reduce erosion and sediments in the rivers in some areas, otherwise 'dam-pond system' may have to be stopped.
A.
Y
B.
N
C.
NG
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