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问题 单项选择题

( )是可靠性的量化指标，即系统或产品在规定条件和规定时间内完成规定功能的概率。

A．有效度

B．可靠度

C．平均寿命

D．维修度

答案

参考答案：B

解析：可靠度是可靠性的量化指标，即系统或产品在规定条件和规定时间内完成规定功能的概率。可靠度是时间的函数，常用月R(t)表示，称为可靠度函数。

单项选择题

Questions from 36 to 40 are based on the following passage: Generally, cargo is carried in containers, but sometimes it is still shipped as breakbulk cargo. During the voyage, goods may be stacked on top of or come into violent contact with other goods. And the cargo might be dragged, pushed, rolled, or dropped during unloading, while moving through customs, or in transit to the final destination.Moisture is a constant concern because condensation may develop in the hold of a ship even if it is equipped with air conditioning and a dehumidifier(除湿机). Another aspect of this problem is that cargo may also be unloaded in precipitation, or the foreign port may not have covered storage facilities. Buyers are often familiar with the port systems overseas, so they will often specify packaging requirements. If the buyer does not specify this, be sure the goods are prepared using these guidelines:Pack in p containers, adequately sealed and filled when possible.To provide proper bracing in the container, regardless of size, make sure the weight is evenly distributed.Goods should be palletized when possible containerized.Packages and packing filler should be made of moisture-resistant material.To avoid pilferage, avoid writing contents or brand names on packages. Other safeguards include using straps, seals, and shrink wrapping.Observe any product-specific hazardous materials packing requirements.Normally, air shipments require less heavy packing than ocean shipments, though they should still be adequately protected, especially if they are highly pilferable.Finally, because transportation costs are determined by volume and weight, specially reinforced and lightweight packing materials have been developed for exporting. Packing goods to minimize volume and weight while reinforcing them may save money, as well as ensure that the goods are properly packed.

Rough handling in transit will do great harm especially to（）.

A．containerized cargo

B．breakbulk cargo

C．palletized goods

D．none of the above
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单项选择题 A1/A2型题

患者，男性，72岁，因发热、咳嗽诊断为肺炎入院治疗，用生理盐水100ml加青霉素160万U静脉滴注，护士在输液过程中应注意观察的项目不包括（）

A.滴液是否顺畅

B.患者有无头晕、恶心、呼吸困难等全身反应

C.注射部位有无肿胀

D.固定是否牢固，针头有无脱出

E.患者诉说疼痛应立即拔针
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