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问题 单项选择题

下列（）是蒸压釜漏气的原因。

A.釜盖密封面产生刻痕

B.疏水未排净

C.设计上有问题

D.内部材料腐蚀

答案

参考答案：A

单项选择题

连续长度( )以上的路线方案调整的属于重大设计变更。

A．2km

B．6km

C．8km

D．10km
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单项选择题

A store currently charges the same price for each towel that it sells. If the current price of each towel were to be increased by $1,10 fewer of the towels could be bought for $120, excluding sales tax. What is the current price of each towel ？（）

A．$1

B．$2

C．$3

D．$4

E．$12
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