问题
多项选择题
动机排烟异常的外在特征主要表现在（），各有不同原因，应仔细区别。
A、排气冒蓝烟
B、排气冒黑烟
C、排气冒白烟
D、排气冒黄烟
E、排气冒白烟后马上又消失了
答案
参考答案：A, B, C
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动机排烟异常的外在特征主要表现在（），各有不同原因，应仔细区别。
A、排气冒蓝烟
B、排气冒黑烟
C、排气冒白烟
D、排气冒黄烟
E、排气冒白烟后马上又消失了
参考答案：A, B, C
If you walk through the streets of any big city at six or seven in the morning, the chances are that you will see women hurrying along, pushing prams (婴儿推车). You may see more than one woman 1 on the same door and, as it opens, quickly kiss the child, 2 a package of nappies and hurry off down the street to clock on the early shift in an office, leaving their children to a child – minder – a woman who may be doing the job legally or illegally, well or badly. Brain Jackson, director of the Child – minding Researching Unit, and his colleagues have done a great deal of work in finding out 3 it means for a child to spend the first years of life in the care of a child – minder. 4 law, anyone who looks after a child for more than two hours a day and gets paid must be registered. 5 the punishment is a 6 pounds fine. Local authorities are responsible for the registration and supervision (监管) of minders. The regulations 6 adequate provision (保障) for fire, safety and health. Very few minders can 7 these. Yet, not many districts give financial assistance. “This means,” Brain Jackson says, “that when you have one registered minder tested and proved by the local authorities, you can be sure that you will get a dozen unregistered, illegal minders 8 .” The researchers found themselves 9 into the role of private investigators when they conduct their 10 . Getting up early to do a “Dawn Watch” following mothers through cold, dark streets and nothing where they left their babies, Jackson says, was a long, slow process.
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