停低压馈电开关时，在停电后实行闭锁，并悬挂警示牌。（）

某商店搞促销活动，一手机现在每部售价600元，获利20%，如果按原售价可获利30%，则该手机的价格在这次的促销活动中降价多少元？

生产“红牛肉”的育肥方式为（）。

A、犊牛的育肥

B、直线育肥

C、架子牛的育肥

D、成年牛育肥

When I lived with my roommates in the university, we ________ often talk into the night.

A．might

B．could

C．should

D．would

现有领导班子弱除了个人素质的原因还有( )。

A．制度建设问题
B．团结协作问题
C．体制合理问题
D．班子结构问题

An 18-month-old child is brought to the emergency department with suspected croup. The child appears frightened and cries as the nurse approaches him. The nurse needs to assess the child's breath sounds. The best way to approach the child is to

A．expose the child's chest quickly and auscultate breath sounds as quickly and efficiently as possible.

B．ask the mother to wait briefly outside until the assessment is over.

C．tell the child the nurse is going to listen to his chest with the stethoscope.

D．allow the child to handle the stethoscope before listening to his lungs.