“精卫填海”、“愚公移山”、“与日俱进”,主要地体现了中华民族的()精神。 ["团结统一","爱好和平","勤劳勇敢","自强不息"]
NumberFormat nf= NumberFormat.getInstance(); nf.setMaximumFractionDigits(4); nf.setMinimumFractionDigits(2); String a = nf.format(3.1415926); String b = nf.format(2); Which two are true about the result if the default locale is Locale.US?() [" The value of b is 2."," The value of a is 3.14."," The value of b is 2.00."," The value of a is 3.141."," The value of a is 3.1415."," The value of a is 3.1416."," The value of b is 2.0000."]
根据《给水排水构筑物工程施工及验收规范》(GB50141)的有关规定,关于水池气密性试验要求的表述,正确的有()。 ["需进行满水试验和气密性试验的池体,应在气密性试验合格后再进行满水试验","工艺测温孔的加堵封闭、池顶盖板的封闭、安装测温仪、测压仪及充气截门等均已完成","所需的空气压缩机等设备已准备就绪","试验压力宜为池体工作压力的1.25倍E.24h的气压下降不超过试验压力的30%"]
在工区内用汽车运输爆破器材,在视线良好的情况下行驶时,时速不得超过()km/h。 ["A.5 ","B.10 ","C.12 ","D.15"]
读者工作的内容有()、()、()、()。
怎样制作焊动圈表张丝的专用工具?