油管的作用是保证液压系统的油液循环和（）。

I was about to leave _____ the telephone rang.

A．then

B．when

C．that

D．and when

According to the passage, which of the following did NOT happen in the room where the college entrance exam was going on

A．The teachers in the exam hall tried to stop the police from entering into the room.

B．Some examinees sent answers with mobile phones to people outside the room to make profits.

C．The mobile phones were confiscated by the police.

D．Some examinees forwarded answers to people who have paid a lot of money.

女性，45岁，1个月前体检查血糖7.1mmol/L，血压160/95mmHg，BMI29.5kg/m²；余无异常。复查空腹血糖7.3mmol/L，餐后2小时血糖9.9mmol/L，酮体(-)。

该病人的BMI，以下正确的是

A．消瘦

B．体重过轻

C．体重正常

D．体重过重

E．肥胖症

断路器二次回路应采用RC加速设计。

放置宫内节育器合适的时间为：

A．经前8～10天

B．经后8～10天

C．经前3～7天

D．经后3～7天

E．月经期