关于挖方路基施工的说法，错误的是（）。 ["根据测量中心线桩和下坡脚桩，分层填土、压实","路基填土不得使用腐殖土或盐渍土","碾压遵循“先轻后重”原则","碾压时，应首先采用不小于12t级的压路机"]
The CURSOR_SHARING parameter is set to SIMILAR at the instance level and you issue these SELECT statements in the order shown below： SELECT * FROM employees WHERE department_id=50； SELECT * FROM employees WHERE department_id=70； There is an index on the DEPARTMENT ID column of the 1，000，000 row EMPLOYEES table. Ninety percent of the employees are part of the DEPARTMENT_ID 50. In which two scenarios will Oracle9i share the corresponding cursors for the two statements？（） ["A","B","C","D"]
在马克思主义发展史上最早提出“初级形式的社会主义”概念的是（） ["马克思","列宁","毛泽东","邓小平"]
轮胎花纹磨损标志指出轮胎磨损允许限度，显示何时必须更换轮胎。
给下列汉字注音并组词。胚
何为饱和蒸汽压？
