批量生产时采用模具装配,是为了追求()。
A、提高生产效率
B、提高装配质量
C、生产效率和装配质量的全面提高
参考答案:C
In his spare time, he often listens to music and watches films to _______ himself.
A.encourage
B.direct
C.educate
D.entertain
()双绞线的铝箔层分有4张,分别包裹线对,切断了每个线对间电磁干拢途径
A、F/UTP
B、U/FYP
C、SF/UTP
D、S/FTP