吊顶主要由（） A.吊挂件 B.吊筋 C.龙骨（或隔栅） D.饰面板 E.扣板

短文改错。

     I ever worked as a tour guide. One day I saw advertisement in the newspaper. I rang up the company, but I was given the job immediate. They asked me to take a tour around the city next morning. The

manager just told me to say anything that I could think about the city. My first tour is terrible. The old bus was not air-conditioned, because it was the middle of summer. It was uncomfortable inside the bus. The

tourist soon became very hot and angry. I owned a very hard time. I stayed there for a few weeks, and

then left and joined in a better company.

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下图是化学实验室制取气体的常用装置。

(1)写出图中标号仪器的名称：①_________，②_________。

(2)以下六种物质是初中教材中出现的化学物质，在一定条件下，都可以产生氧气。

请写出上图中物质X的名称_________，实验室用该药品制取氧气的化学方程式为_________________；所选用的发生装置为________(填序号)，收集装置为_________(填序号)；检验氧气的简便方法是_______。

(3)实验室制取二氧化碳的发生装置是_________(填序号)。其反应化学方程式为_________________。

甲状腺腺瘤的叙述错误的是（）

A.多为单发

B.圆形或椭圆形，表面光滑

C.中等硬度，无压痛

D.随吞咽而上下移动

E.不会发生甲亢或恶变

与中风的发生无直接关系的因素是（）

A、饮食

B、气温

C、病毒感染

D、情绪刺激

施工项目成本费用控制的核心任务是（）。

A、纠偏

B、检查

C、成本预测

D、偏差分析