皮皮学，免费搜题
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【单选题】
机械波的表是 ,式中y和x的单位是m,t的单位是s,则
A.
波长为5m
B.
波速为10
C.
周期为
D.
波沿x轴正方向传播
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参考解析：
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举一反三
【单选题】—What can I do in the classroom? —_____. [     ]
A.
You can smoke.
B.
You can play football.
C.
You can read books.
D.
You can run.
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【单选题】We hadn’t planned to meet. We met __ chance .
A.
of
B.
in
C.
by
D.
for
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【单选题】四角赖利绦虫寄生于()的小肠
A.
反刍兽
B.
猪
C.
鸡
D.
水禽
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【判断题】玩具是指专门给儿童游戏的物品和材料。
A.
正确
B.
错误
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【简答题】一位女士到a商场买鞋,让营业员拿出一双价值560元的女靴试穿,试穿后感到不理想,准备离开。这时营业员要求其支付5元的试穿费,否则不允许离开该店,并对女士恶语相向。商场侵犯了消费者的()权和()权。
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【单选题】Why can the content of harmful components in secondhand smoke be several times or even dozens of times higher than that in direct smoke?
A.
Because some people smoke in enclosed spaces.
B.
Because the chemicals in tobacco can cause cancer.
C.
Because insufficient combustion makes secondhand smoke more toxic than the direct smoke.
D.
Because there are more non-smokers than smokers.
查看完整题目与答案
【单选题】You are not _____ to smoke here. If you want to smoke, you can go outsi de. [     ]
A.
let
B.
allowed
C.
agreed
D.
made
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【单选题】-Do you mind if I smoke here? -_______ You can go to smoke in the next door.
A.
Yes, please.
B.
Never mind.
C.
You'd better not.
D.
Of course not,
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【简答题】球化退火是为了获得 组织,它适用于 ___ ___ 钢的退火。
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【单选题】Do you mind if I smoke here? ()You can go to smoke in the yard.
A.
Yes. please
B.
Never mind
C.
You' d better not.
查看完整题目与答案
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【单选题】—What can I do in the classroom? —_____. [     ]
A.
You can smoke.
B.
You can play football.
C.
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D.
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查看完整题目与答案
【单选题】We hadn’t planned to meet. We met __ chance .
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【单选题】四角赖利绦虫寄生于()的小肠
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【判断题】玩具是指专门给儿童游戏的物品和材料。
A.
正确
B.
错误
查看完整题目与答案
【简答题】一位女士到a商场买鞋,让营业员拿出一双价值560元的女靴试穿,试穿后感到不理想,准备离开。这时营业员要求其支付5元的试穿费,否则不允许离开该店,并对女士恶语相向。商场侵犯了消费者的()权和()权。
查看完整题目与答案
【单选题】Why can the content of harmful components in secondhand smoke be several times or even dozens of times higher than that in direct smoke?
A.
Because some people smoke in enclosed spaces.
B.
Because the chemicals in tobacco can cause cancer.
C.
Because insufficient combustion makes secondhand smoke more toxic than the direct smoke.
D.
Because there are more non-smokers than smokers.
查看完整题目与答案
【单选题】You are not _____ to smoke here. If you want to smoke, you can go outsi de. [     ]
A.
let
B.
allowed
C.
agreed
D.
made
查看完整题目与答案
【单选题】-Do you mind if I smoke here? -_______ You can go to smoke in the next door.
A.
Yes, please.
B.
Never mind.
C.
You'd better not.
D.
Of course not,
查看完整题目与答案
【简答题】球化退火是为了获得 组织,它适用于 ___ ___ 钢的退火。
查看完整题目与答案
【单选题】Do you mind if I smoke here? ()You can go to smoke in the yard.
A.
Yes. please
B.
Never mind
C.
You' d better not.
查看完整题目与答案