中华人民共和国的成立，标志着半殖民地半封建社会的结束，实现了新民主主义向社会主义的转变 。
Increasing _______________ (compete) in the technology industries in Asia will force companies to recruit more qualified candidates。
()是焊接紫铜时，母材和填充金属难以熔合的原因。
Despite having received positive reviews by industry critics, sales of the digital MP3 player have been quite _______(disappoint).
我国某型彩电的有效关税保护率为 12%，其原材料的进口关税为 5%，进口原材料价值占成品价值的 40%，那么我国该彩电的进口关税应为多少?(计算结果精确到 1%)
