榜样式
在下列4种物质中,哪一种不是细胞后含物() ["脂肪","碳水化合物","核酸","糊粉粒"]
Which method in the Thread class is used to create and launch a new thread of execution?() [" Run();"," Start();"," Execute();"," Run(Runnable r);"," Start(Runnable r);"," Execute(Thread t);"]
5. String foo = “base”; 6. foo.substring(0,3); 7. foo.concat(“ket”) 8. Type the value of foo at line 8.()
细筛不仅起到了筛分作用,而且还起到了()作用,提高了筛下产品的品位。 ["过滤","分选","脱水","浓缩"]
在废水生物脱氮工艺中,一般包括去碳、()和()三个阶段。