沥青和高分子防水卷材不透水性中,开缝盘在达到规定压力后,保持压力().
A.(30±2)min
B.(2±0.5)h
C.(10±1)h
D.(24±1)h
参考答案:D
对欠税公告《实施细则》是如何规定的?
Studies show the MP3 people have made much use of _____ music may be causing hearing
loss in many people. [ ]
A. enjoy
B. to enjoy
C. enjoying
D. enjoyed