合成塔中既受高温又受高压的管线是()。
A、合成塔出口管
B、热电偶中层保护管
C、热电偶内层保护管
D、合成塔进口管
参考答案:C
Form the sentences. 连词成句。
1. restaurant, in, a, waiter, a, works
2. the, library, Let's, read, a, book, go to, to
3. does, a, where, live, snake
4. is, the, classroom, where
5. have, a, tail, long, it, does
在做油品的PH试验时,试样应采用()加热器加热。
A.酒精灯
B.水浴锅
C.电炉