下列物品属于直接测量工具的是（）。A．直尺 B．卡钳 C．游标卡尺 D．百分尺

At last Tom was able to ____ her to give up the foolish idea that she wanted to go there alone.

A．suggest

B．expect

C．advise

D．persuade

下列不属于书证具有的特征是( )。

A．书证的物质载体并不限于纸质材料
B．书证以其表达的思想内容来证明案件事实
C．书证往往能够直接证明案件的主要事实
D．书证的真实性较强，不易伪造

The discovery of the connection between aspirin and Reyes syndrome, a rare and deadly ailment, is a recent example of the caution with which drugs must be used, even for medical purposes.

A．disease

B．sick

C．ill

D．illness

简述白盒测试技术的要点。

当工程施工高度超过（）米时，应当配备有足够扬程的消防水源和必须保障畅通的疏散通道。

A、60

B、50

C、40

D、30