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【单选题】
对防汛所备沙石料的养护管理一般不包括（）。A.
存放位置是否适宜
B.
堆放是否整齐
C.
料堆是否整洁
D.
物料开采
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】What could be Americans’ attitude towards paying without tip?( )
A.
Americans never pay the tip.
B.
Paying without tip may irritate or upset some Americans.
C.
Tip is not a must thing in America.
D.
Americans pay the same amount of tip for everything. 答案：B
【简答题】What occurs when the pH-sensitive tip of a newly manufactured glass electrode is immersed in water?
【单选题】Tip 3 and Tip 4 give you some advice on what you should do when you are ______.A.
A.
60. Tip 3 and Tip 4 give you some advice on what you should do when you are ______. A. inside a building
B.
outside a building
C.
in your house
D.
in a store
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