把315分解质因数是______．
315=3×3×5×7；
故答案为：315=3×3×5×7．
Everybody was touched __________ words after they heard her moving story.
A．beyond
B．without
C．of
D．in
为了解适应证应该做的进一步检查是
A．动脉血气
B．食管超声
C．放射性核素扫描
D．右心导管
E．心血管造影
