无极绳绞车前方声光报警器额定电压为()V。
A.36
B.127
C.380
D.660
参考答案:A
Though having lived abroad for years,many Chinese still ________ the traditional customs.
A.perform
B.observe
C.possess
D.support
通过较高的生产率和经济增长,每个人都可以从每一次技术进步中获益。