鼓膜外伤穿孔后正确的处置是（）。 A.抗生素滴耳剂应用 B.清洁外耳道血痂，无菌生理

单词拼写。

1. Many students attended the lecture, i______ our monitor.

2. Though he is not a n______ English speaker, he can speak English very fluently.

3. Though I haven't met him for many years, I could r______ him immediately I saw him in the crowd.

4. He thought I had known the fact. But a______, I knew nothing about it.

5. Luckily, after the earthquake, the people have got a lot of i ______ help.

中国机械行业标准规定了两种主要测试电镀溶液分散能力方法为（）和轮廓仪法。

《机动车运行安全技术条件》规定，汽车轮胎螺母和半轴螺母应装备齐全，并按最大扭矩拧紧。

质量为m的物体，从静止出发以g/2的加速度竖直向下运动h米，下列正确的是（   ）

A．物体的重力势能减少mgh/2

B．物体的机械能保持不变

C．物体的动能增加mgh/2

D．物体的机械能减少mgh/2

在合同条款方面，设计—建筑合同条款与施工合同条款相比，其内容减少了( )。

A．不可抗力

B．暂停施工

C．指定分包人

D．测量与估价

E．开工和竣工