皮皮学，免费搜题
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【单选题】
圆轴受扭转时，传递功率不变，仅当转速增大一倍时，最大剪应力( )A.
增加一倍
B.
增加两倍
C.
减小两倍
D.
减小一倍
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】At the sauna and SPA center, how do you greet a guest when he/she comes to the SPA center? (用不同的句型进行表达,说出至少3句)
【单选题】 Which is not a good way to greet the guest?
A.
Good morning, sir.
B.
Nice to see you. How are you doing today?
C.
Is everything very well with you today?
D.
Hey, dude!
【简答题】How to greet a guest when he/ she arrives at the Fitness and Recreation Center?
【多选题】ABS为无定形聚合物，无明显熔点，黏流温度在 [填空(1)] 左右，分解温度达 [填空(2)] 以上，属于成型加工性能良好的材料。一般，注塑成型温度在160～240℃，挤出温度在160～210℃。
A.
160℃
B.
250℃
【单选题】How do you greet a guest at the restaurant, if it is in the evening?
A.
Good evening. Welcome to our restaurant.
B.
Hello, Welcome to our restaurant.
C.
Good morning. Welcome to our restaurant.
D.
Welcome to our restaurant.
【简答题】在大多数情况下,微管都是以简单的单体存在,在纤毛和鞭毛中以 形式存在。
【单选题】You are a doorman. How do you greet a guest in the morning?
A.
Just a moment, please……luggage cart
B.
fired eggs, sunny side up
C.
Good morning, sir. Welcome to our hotel.
D.
here
【简答题】How do you greet a guest when he/she comes to the SPA center?
【简答题】ABS为无定形聚合物，无明显熔点，黏流温度在[填空(1)]左右，分解温度达[填空(2)]以上，属于成型加工性能良好的材料。一般，注塑成型温度在160～240℃，挤出温度在160～210℃。
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