把45分解质因数:45=______.
45=3×3×5;
答:把45分解质因数:45=3×3×5;
故答案为:3×3×5.
In our school libray,there____a number of books on science and the number of them_____growing larger and larger.
A.is;are B.are;is C.have;is
心脏病临床评定主要有()
A.心肌酶谱
B.核素显像
C.超声心动图
D.心导管检查
E.心电图