A.2mol
B.3mol
C.4mol
D.6mol
答案:C
《煤矿安全规程》规定矿井空气体积中NH3的最高允许浓度是()%。
A.0.04
B.0.004
C.0.0004
下列语句能给数组赋值而不使用for循环的是
A.myArray{[1]="One";[2]="Two";[3]="Three";}
B.String s[5]=new String[]{"Zero", "One", "Two", "There", "Four"};
C.String s[]=new String[]{"Zero", "One", "Two", "There", "Four"};
D.String s[]=new String[]=|"Zero", "One", "Two", "There", "Four"};