西北航道是指从大西洋经北冰洋，再进入太平洋的航道，以往因受冰封影响，航运有限，但

阅读短文，判断正(T)误(F)。

      Joe had an unhealthy(不健康的) diet(食谱) last week. Now he is at the doctor's office.

Doctor: Joe, you look very ill. What did you eat and drink last week?

Joe: Last week I ate a lot of sweets and chocolate.  I drank a little water.

Doctor: Joe, you ate too much chocolate. Sweets and chocolate are bad for us. You should not eat too

many sweets and too much chocolate. You drank too little water. Water is good for us, so you should

drink more water.

Joe: I know,doctor. Thank you.

( ) 1. Joe had a healthy diet last week.

(     ) 2. He is now ill at home.

( ) 3. He ate too many sweets and too much chocolate.

( ) 4. He also drank too much water.

( ) 5. Water is good for us,but sweets and chocolate are bad for us.

一根摆长为2 m的单摆，在地球上某地振动时，测得完成100次全振动所用的时间为284 s.

（1）求当地的重力加速度g；

（2）该单摆拿到月球上去，已知月球的重力加速度是1.60 m/s²，单摆振动周期是多少？

在以大型装置或工艺过程为主要核心技术的工业建设领域中，建设项目总承包模式又称为 ()。

A．建设和施工总承包

B．设计、采购、施工总承包

C．FIDIC工程设备和设计

D．建造

下列说法错误的是（　　）

A．水有固、液、气三种状态，在一定条件下可以相互转化

B．云是有空气中的水蒸气凝结成的小水滴或小冰晶

C．冰的熔点是0℃

D．1标准大气压下，水的沸点是100℃

轻中度低渗性脱水首先补充的液体是（）

A.5%碳酸氢钠

B.0.45%氯化钠

C.0.9%氯化钠

D.5%氯化钠

E.11.2%乳酸钠