载运危险货物船舶的船员，应当持有（）颁发的适任证书的培训合格

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问题单项选择题

载运危险货物船舶的船员，应当持有（）颁发的适任证书的培训合格证，熟悉所在船舶载运危险货物安全知识和操作规程.

A.主管机关

B.船厂

C.海事管理机构

答案

参考答案：C

阅读理解

阅读简答。

Last week's talent show was a great success. There were fifteen acts. Eliza Clark won the prize for the

best performer. She played a beautiful piano piece. Hu Yue was the quietest performer. He danced

without music. The prize for the funniest act went to Steve Tian and his dog, Fido. They sang a cute song

together.

根据短文内容，回答下列问题。

1. Was last week's talent show a great success?

__________________________________

2. How many acts were there in last week's talent show?

__________________________________

3. What did Eliza Clark do in the talent show?

__________________________________

4. How did Hu Yue dance?

__________________________________

5. Who won the prize for the funniest act?

__________________________________

单项选择题

关于铸造金属全冠的描述正确的是（）.

A.铸造金属全冠的邻接关系不易恢复，容易造成食物嵌塞

B.边缘线长，易发生继发龋坏

C.牙龈易受刺激形成炎症

D.修复后不能进行基牙的电活力测试

E.修复后容易冷热激发酸痛，不适用于活髓牙