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Norm Pethrick, a 36-year-old man in Australia’s northern city Darwin, was praised on Thursday for jumping onto a crocodile’s back to save his wife Wendy at Litchfield National Park, a popular tourist spot southwest of Darwin, a local newspaper reported. Ms Pethrick was standing on a river bank Wednesday afternoon when the saltwater crocodile lunged, locking its jaws on both her legs as it tried to drag her underwater. Norm Pethrick, who with his wife had been collecting water, immediately went to help her. He jumped onto the back, poked the eyes of the crocodile and finally got his wife free. Ms Pethrick was later taken to Royal Darwin Hospital for a medical treatment. The doctors said she was suffering eight puncture wounds in her right leg, a puncture wound in her left leg and a serious cut to one of her fingers. “This could have been a fatal and tragic situation,” said the general manager of Royal Darwin Hospital (RDH), Dr Len Notaras, according to a local report. He said Ms Pethrick was saved by her husband’s “quick and diligent actions”. Dr Notaras also said she would remain in hospital for three to four days and have an operation to clean the wounds, which are easy to get infected because of bacteria on the teeth of the crocodile.
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【判断题】0306 柱面、锥面、一条曲线的主法线面均为可展曲面。
A.
正确
B.
错误
【多选题】下列说法正确的是( )。
A.
存货周转率是评价和衡量企业购入存货、投入生产、销售收回等各环节管理状况的综合性指标
B.
存货周转率越低越好
C.
应收账款周转率反映应收账款的周转速度
D.
应收账款若能及时收回,说明企业的短期偿债能力强,反映企业管理应收账款的效率高
【单选题】粗线、中粗线和细线的宽度比率为( )。
A.
3:2:1
B.
1:0.5:0.25
C.
1:0.7:0.5
D.
1:0.7:0.25
【简答题】绘图铅笔的铅芯有软硬之分,分别用字母 和 表示。
【简答题】粗线、中粗线和细线的宽度比率为( )。
【单选题】早期新冠肺炎的一般症状有哪些?
A.
发热
B.
乏力
C.
干咳
D.
胸闷
E.
以上皆是
【判断题】负极管子的外壳是正极,和发电机外壳一起成为发电机的正极。
A.
正确
B.
错误
【单选题】粗线、中粗线和细线的宽度比率为:( )
A.
4:1.5:1
B.
4:3:2
C.
3:1.5:1
D.
4:2:1
【简答题】粗线、中粗线和细线的宽度比率为:( )
【单选题】粗线、中粗线和细线的宽度比率为 多少?
A.
5:3:2
B.
4:2:1
C.
2:1.5:1
D.
1:2:3
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