题目内容

管道系统的吹扫目的是将系统存在的脏物、泥沙、焊渣、锈皮及其他机械杂质,在化工投料前彻底吹扫干净,防止因管道及系统存有杂物堵塞阀门、管道及设备,发生意外故障。

A. 对
B. 错

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下面选项中，可以将HTML页面的标题设置为“2021网络技术专业”的是

A. 2021网络技术专业
B. 2021网络技术专业
C. 2021网络技术专业
D. 2021网络技术专业

Chris hurries to the interview immediately from___________ .

A. the police station
B. his apartment
C. his class
D. his son’s nursery

How many students are there in Chris’ high school class?

A. 20
B. Too many
C. 12
D. It’s not mentioned.

In this part, we can see Chris has demonstrated all the qualities but____________.

A. Honesty
B. team-playing
C. humor
D. quick-wittedness