在实际建筑工程中,一般优先选用交联聚乙烯电缆,其次选用()绝缘电缆。
A.普通油浸纸
B.不滴油纸
C.橡皮
D.聚氯乙烯
参考答案:B
《e小调第九交响曲(自新大陆)》的作曲者是 ( )
A.德沃夏克
B.贝多芬
C.格什温
D.柴科夫斯基
The entrance exam is only fifteen days away from now. You will fail the exam ______ you study hard from
now on. [ ]
A. if
B. as soon as
C. unless
D. although