后张法预应力混凝土连续梁施工中，曲线预应力孔道的波峰部位应留（）。 ["溢浆孔","压浆孔","排气孔","排水孔"]
下列各地中，地壳最厚处在（） ["华北平原","云贵高原","青藏高原","四川盆地"]
Given this method in a class： public String toString（） { StringBuffer buffer = new StringBuffer（）； buffer.append（‟<‟）； buffer.append（this.name）； buffer.append（‟>‟）； return buffer.toString（）； } Which is true？（） [" This code is NOT thread-safe."," The programmer can replace StringBuffer with StringBuilder with no other changes."," This code will perform well and converting the code to use StringBuilder will not enhance the performance."," This code will perform poorly. For better performance， the code should be rewritten： return “<“+ this.name + “>”；"]
“小金库”有哪几种常见的现象？
砂卵石及含水地层不宜使用的不开槽管道施工方法是（）。 ["定向钻","浅埋暗挖","密闭式顶管","盾构"]
清代通政司的职掌有哪些？
