bitumen()
第1题:
沥青用于污水舱和尖舱。()
第2题:
Pull out the nails with ().
第3题:
The principal protective coating is paint.
The principal protective coating is cement wash.
The principal protective coating is bitumen.
The principal protective coating is varnish.
第4题:
沥青用于污水舱和尖舱。
沥青用于淡水舱和尖舱。
水泥浆用于污水舱和尖舱。
水泥浆用于淡水舱和尖舱。
第5题:
Bitumen is used for bilges and peak tanks.()
第6题:
()gives a clear protective coat to woodwork.
第7题:
沥青
水泥
漆
稀释剂