急性化脓性腮腺炎不宜行腮腺造影。

It's easy to take your hearing for granted until it's too late.

With the wide    1   _(popular) of digital entertainment products, it is not uncommon to see people wearing headphones and listening to music    2    running in the park or using public transport. And the volume is often so loud that people around    3    can hear the music as well.

However, doctors warn that such behavior can    4   _(potential) damage their hearing. "In noisy places, people tend   5  _(turn) the volume up to get the same clarity of sound. Unfortunately, that can damage the hearing   6  people being aware of it," said Feng Yongfeng, chief ENT physician at Beijing Tian'an Hospital.

After Spring Festival, the hospital witnessed   7   slight increase in the number of teenagers coming in with hearing problems,  8   Feng attributed to them wearing headphones at home for long periods during the holiday. Feng said both in-ear and overhead headphones can harm the ears and    9   (advise) against using them for long periods. He said if you do use headphones it is worth    10   (invest) in the highest quality you can afford.

《特种设备安全监察条例》第八十八条规定：对事故发生负有责任的单位，由特种设备安全监督管理部门依照规定处以罚款，发生重大事故的，处（）。

A.5万元以上10万元以下罚款；

B.10万元以上20万元以下罚款；

C.20万元以上50万元以下罚款；

D.50万元以上200万元以下罚款。

理想流体的力学模型即（）。

A．均质流体

B．不可压缩流体

C．不计黏性的流体

D．不考虑重力的流体

行政执法机关对应当向公安机关移送的涉嫌犯罪案件，不得以行政处罚代替移送。

原油经处理后脱出的污水中，仍然含有少量油。污水中的油直径较大者，易于从污水中分离出来，漂浮于水面而被除去。这种状态的油称为（）

A、分散油

B、乳化油

C、溶解油