乙炔瓶上可放置物件，如悬挂橡皮胶管及焊割炬。（）
参考答案：错
下列指标中，不属于混凝土路面配台比设计指标的是（）。
A.工作性
B.抗压强度
C.耐久性
D.弯拉强度
—I hear we'll have a new foreign teacher soon. Do you know when _________?
—Sorry, I have no idea. [ ]
A. he will come
B. will he come
C. is he coming
D. he was coming
