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【判断题】
数学建模的目的是解决实际问题A.
正确
B.
错误
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【单选题】Every lifeboat which is fitted with a fixed two-way（）radiotelephone apparatus with an antenna which is separately mounted shall be provided with arrangements for sitting and securing the antenna effec...
A.
HF
B.
VHF
C.
MF
D.
MF/HF
【单选题】Every lifeboat which is fitted with a fixed two-way VHF radiotelephone apparatus with ____ which is separately mounted shall be provided with arrangements for sitting and securing the antenna effectiv...
A.
dummy
B.
a supporting facilities
C.
a back-up equipment
D.
an antenna
【单选题】对耐青霉素的金黄色葡萄球菌感染可用
A.
苯唑西林、氯唑西林、庆大霉素
B.
多黏菌素、红霉素、头孢氨苄
C.
氨苄西林、红霉素、林可霉素
D.
头孢氨苄、红霉素、四环素
E.
土霉素、庆大霉素、头孢氨苄
【单选题】Every lifeboat which is fitted with afixed two-way VHF radiotelephone apparatus with——which is separately mounted shall be provided with arrangements for sitt.ing and securing the antenna effectively ...
A.
a dummy、antenna
B.
a supporting faciLities
C.
a back-up equipment
D.
)an antenna
【简答题】We know the mosquito very well. Mosquitoes fly everywhere. They can be found almost all over the world, and there are more than 2,500 kinds of them. No one likes the mosquito. But the mosquito may dec...
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