利用不导电的物质将导电体隔离或包屏起来防止人体触电的措施，称为绝缘。

会计电算化近期计划是指对今后较短时期内所要进行的会计电算化工作和所要达至的目标作出计划。 ( )

Read the following directions on a bottle of medicine：

“Take two tablets(药片)with water, followed by one tablet every eight hours, as required, For maximum(最大量) night-time and early morning relief(缓解疼痛), take two tablets at bed - time, Do not take more than six tablets in twenty-four hours.

For children six to twelve years old, give half the amount for a grownup. For children under six years old, ask for your doctor’s advice.

Reduce the amount if nervousness, restlessness, or sleeplessness occurs,”

小题1:The directions on this medicine bottle clearly warn the patient not to take more than _____ .

A．twenty-four tablets a day.

B．eight tablets a day.

C．six tablets a day.

D．three tablets a day.小题2:We can infer from the directions that ______ .

A．the medicine could cause some people to feel nervous.

B．children may take the same amount that grown-ups take.

C．one may not take this medicine before going to bed.

D．the medicine is a liquid.小题3:If one cannot sleep, it is suggested that he _____ .

A．take two tablets before going to bed.

B．take less than two tablets before going to bed.

C．stop taking the medicine.

D．ask advice of a doctor.小题4:Obviously the medicine _______ .

A．may be dangerous to small children.

B．cannot be taken by children under twelve years old.

C．may be taken by children but not by grown-ups.

D．may be taken by grown-ups but not by children.

在锅炉本体安装中，对流管束、水冷壁管与锅筒之间的连接通常采用胀接法，与焊接连接相比，胀接法的特点有( )。

A．管端、管口无需清理

B．管端、管口无需打磨

C．管端无需退火处理

D．减少了水出入管端的阻力损失

保养时，可用干布或铜丝刷轻轻擦拭卷接机组监测器和光电传感器的透镜。