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【单选题】
已知命题p:若a>b,则 1 a < 1 b ,那么“?p”是(  )
A.
若a>b,则 1 a ≥ 1 b
B.
若a>b,则不一定有 1 a < 1 b
C.
若a≤b,则 1 a < 1 b
D.
若a≤b,则 1 a ≥ 1 b
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参考答案:
举一反三
【单选题】听力原文:M:I'd like to drive to the cinema,but my sister will use the car tonight. W:Who needs a ear? We can take the bus if we go a little earlier. Q:What does the woman suggest? (14)
A.
They don't have to go to the cinema.
B.
His sister will let them use the car.
C.
The bus is free with her.
D.
They'll have to rent a car as early as possible.
【多选题】关于对消防车道的要求,正确的有( )。
A.
当建筑物的沿街部分长度超过150m或总长度超过220m时,应在适中位臵设臵穿过建筑物的消防车道
B.
超过3000个座位的体育馆、超过2000个座位的会堂和占地面积大于3000㎡的展览馆等公共建筑,宜设臵环形消防车道
C.
供消防车取水的天然水源和消防水池,应设臵消防车道
D.
消防车道的宽度不应小于4m。消防车道穿过建筑物的门洞时,其净高和净宽不应小于4m
E.
消防车道路面、扑救作业场地及其下面的管道和暗沟等应能承受大型消防车的压力
【单选题】On ne sortait plus car, plusieurs jours, il soufflait un vent glacial. (冰冷的)
A.
depuis
B.
il y a
【单选题】听力原文:W: Last night, Jason and his girlfriend went out for dinner. He parked his car near the restaurant And after dinner they came out and found it gone. M: Wow, that's really tough. He just borrowed ...
A.
Jason damaged Mike's car in an occident.
B.
Jason just bought a new car.
C.
Jason bought a new car for Mike.
D.
Jason couldn't find Mike's car.
【单选题】_____ that he might be hit by other cars, Peter put a card on the back of his car reading 'Caution-Newly Licensed'. [     ]
A.
Concerned
B.
Concerning
C.
Having concerned
D.
Being concerned
【单选题】当建筑物沿街道部分的长度大于150m 或总长度大于( )m 时,应设置穿过建筑物的消防车道。确有困难时,应设置环形消防车道。
A.
200
B.
250
C.
160
D.
220
【单选题】依据现行《建筑设计防火规范》的规定,当建筑物沿街道部分的长度大于()m或总长度大于()m时,应设置穿过建筑物的消防车道。
A.
120,220
B.
150,200
C.
120,200
D.
150,220
【多选题】设备的物质磨损一般会经历( )阶段。
A.
初期磨损阶段
B.
正常磨损阶段
C.
激剧磨损阶段
D.
后期磨损阶段
【判断题】当建筑物沿街道部分的长度大于150m或总长度大于220m时,应设置穿过建筑物的消防车道。确有困难时,应设置环形消防车道。
A.
正确
B.
错误
【单选题】I think I can fix your car tomorrow afternoon.________, you'll have to wait till Friday. [     ]
A.
If neces sary
B.
If so
C.
If not
D.
If possible
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