题目内容

64. In recent decades, environmental problems have been on the rise as the result of human activities and unplanned management of the technological development.

A. 近几十年来，人类活动的范围不断延伸，导致全球气候变暖的问题日益严重。
B. 近几十年来，日益变坏的环境问题与人类从事的活动和科技进步快息息相关。
C. 近几十年来，由于人类活动和技术开发的无计划管理，环境问题一直在增加。

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英译中When you get into a car accident, there is something you can do to make sure that everyone issafe.You should first check yourself for injuries. If you are injured, call 911 or ask someone else todo so. If you are seriously injured. try not to move, and wait for emergency personnel. If you're not too hurt to move, check on the other passengers in your car. If anyone is injured, get on the phone with emergency services.

温度升高时，润滑油的粘度（）。

A. 升高
B. 减低
C. 不变
D. 可能升高也可能减低

润滑油牌号L-AN32中的32是表示这种润滑油（）的平均值。

A. 动力粘度
B. 条件粘度
C. 运动粘度
D. 闪点

以下四种特性，只属于润滑脂的特性是（）。

A. 凝点
B. 滴点
C. 闪点
D. 油性