在机械设备的传动带、明齿轮，接近于地面的连轴节、皮带轮、转动轴、飞轮、砂轮和电锯等危险部分，都要装设防护装置
参考答案：对
Man: I'm terribly sorry, Ann, I lost the magazine you lent me that other day. Woman: It doesn't matter. It was a back number anyway. Question: What does the woman mean
A．She thinks that the man is generous by nature.
B．The magazine doesn't have a back cover.
C．She feels the man's apology is enough.
D．The magazine is no longer of any use to her.
玻璃窗按其开关方式可分为（）。
A、平开窗
B、悬窗
C、扯窗
D、天窗
