卷扬机距吊物地点应超过15m以上，用于桅杆作业时，距离应大于桅杆的高度。
参考答案：对
He just _______ the headlines because he was too busy to read the whole newspaper.
A．stared at
B．looked around
C．glared at
D．glanced through
写出三种半导体制造业的金属和合金（）、（）和（）。
