问题
单项选择题
镗床主轴箱内液压泵因（）会引起加工时的振动。
A.磨损
B.卡泵
C.困油
D.吸空
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
镗床主轴箱内液压泵因（）会引起加工时的振动。
A.磨损
B.卡泵
C.困油
D.吸空
参考答案：A
DearFeifei, Please take __36__ things__37__ your sister: __38__ hat, watch, notebook, keys and ID card. The hat is on the dresser. The watch __39__under the bed. The notebook is on __40__ bed. The keys __41__ in the drawer. The ID card is on the table. Thanks, Grandma
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