液体类航空货物包装要遵循( )原则。A．容器内至少有5%～10%的空隙 B．封盖严

男，62岁。排尿困难5年，加重3个月。直肠指检：前列腺增生Ⅲ度，光滑，中间沟消失，超声示残余尿200ml，前列腺两侧叶增大，中叶突入膀胱，心脏、肝功正常，尿常规正常，此患者治疗应采用

A．药物治疗

B．膀胱造瘘术

C．经膀胱前列腺切除术

D．经耻骨后前列腺切除术

E．经 * * 前列腺切除术

一个数四舍五入到万位后约是20万，这个数是199999．______．

扫描仪校准时，不需要使用（）。

A.标准色卡

B.油墨

C.光源

D.校准仪器

阅读理解

     Moving at any time of a year is difficult, but if you have a flexible schedule and are not on a specific

timeline, there are several factors to consider when deciding when to move. Keep in mind that these

factors could also be part of a negotiation deal with your employer if you are being relocated or if

starting a new position.

     If you have children at home, it is best to work around the school calendar.  Summer is an ideal time,

as children have completed another grade and have said their goodbyes to school friends. Planning to

move directly following the end of school, however, does not give your children time to adapt to the

idea of moving, to say goodbye to neighborhood friends and their home. When setting the date, allow

a few weeks at the new destination for children to unpack and meet new neighborhood friends. They

will be better prepared for the school year if they have time to make their new house their home.  Too

much change can be detrimental to performance and emotional wellbeing.

     What works best for your children also works best for you. As part of the settling in process, take

a few days for you and your children to check out the new school, meet some teachers and find

appropriate transportation. Both you and your children will be better prepared, leading to a smoother

transition.

    When possible, avoid moving before major holidays, such as Christmas, since part of such holidays

is being with family and friends. Birthdays, and other family events can also be difficult. Give yourself

enough time in your new place before the holiday season begins to meet new people and feel a sense

of community. Better yet, save your move for immediately following a holiday. Holidays provide a

perfect opportunity for goodbyes and final gettogethers.

     Most people would agree that summer is the best time to move. Children are out of school, the

weather is almost guaranteed to be perfect and friends are available to help. If this is your ideal time to

move, make sure you check moving company schedules and rates before confirming your move date.

  Most companies have peak times and will charge higher rates accordingly. Also, if you are planning

to move at peak times, you will need to be better organized to ensure that a moving company or a

moving truck is available for the date and times you require. Keep in mind that the level of the service

often changes between the summer months, when students replace fulltime experienced movers, and

offseason.

     As much as summer could cost you more, winter, as common sense indicates, is also not an ideal

time to move. Travel is difficult, both for you and your family, along with the moving company.  Items

kept overnight in a truck under freezing conditions may result in damaged goods.  If you are moving

from one climate to another, water damage may occur when the mode of transport that is moving your

household items travels from a cold environment to a warmer climate. Freezing and thawing cause the

most damage if items are not properly sealed.

1. According to the passage, before moving children usually ________.

   A. meet new neighborhood friends

   B. pack their package

   C. say goodbye to neighborhood friends

   D. complete their grades

2. What is the disadvantage of moving in summer?

   A. The weather.

   B. Moving company schedules.

   C. The changeable level of the service.

   D. Without friends' help.

3. According to the passage, when is the best time to move?

   A. Winter.                  

   B. Vacations.

   C. Major holidays.            

   D. Summer.

对于流感病毒来说，实验室检测方法包括哪些（）

A、病毒分离

B、核酸检测

C、病毒抗原检测

D、血清学诊断

E、显微镜观察