安装波纹补偿器时不得用补偿器的变形来调整（）的安装误差。
A、管径
B、调压器
C、凝水缸
D、管位
参考答案：D
水环境容量
His great success _________ hard work and good methods.
A．resulted in
B．led to
C．as a result of
D．resulted from
.