The tank is protected from freezing by a 3–pieces fiberglass blanket.in the above sentence,the "fiberglass blanket" means "玻璃纤维覆盖层".
A.1
正确答案是A
The tank is protected from freezing by a 3–pieces fiberglass blanket.in the above sentence,the "fiberglass blanket" means "玻璃纤维覆盖层".
A.1
正确答案是A