香港的《建筑地盘（安全）规例》内规定，雇有50名或以上之建筑地盘，须有下列哪一种设施

症状性子宫肌瘤介入治疗时通常采用的栓塞剂是（）

A.碘化油

B.PVA

C.无水乙醇

D.明胶海绵

E.金属弹簧圈

小题1:He _______ ever ________ (be) to the amusement park several times.

小题2: I’m sorry I didn’t finish ___________ (write) my composition.

小题3:I have been ________ (skate) for two hours.

小题4:________ you ________ (teach) us computer science next year.

小题5:I went there last year and _________ (fall) in love with it.

小题6:They ___________ (fly) to the moon in ten years.

小题7: I will go to the water park if it __________ (not rain) tomorrow.

小题8:When Mr. Cook got home, his son ___________ (listen) to the radio.

小题9:The old man makes a living by ________ (sell) vegetables.

小题10:The box is too heavy. I’m not strong enough _________ (carry) it.

为什么说科学技术是第一生产力？

新领用或长期停用的电动工具应用1000V的绝缘电阻表测量其绝缘电阻。