编制人工定额时，工人在工作班内消耗的工作时间属于损失时间的是()。

苹果手机在刚进入市场时定价较高，以便短期尽快收回投资，这种策略是（）

.车辆行驶形成高速气流和自然风力的作用,（）垃圾积存最多。

某拟建项目的建筑安装工程费为1000万元，设备及工器具购置费为600万元，工程建设其他费为300万元，则该项目涨价预备费的计算基数为()万元。

道路清扫保洁应该是

If you are too ________ of your children, they will never learn to deal with difficulties in life.

微分方程是

We are all concerned _______ her safety.

It makes good ________ to bring an umbrella; it seems to be raining today.

To understand the sentence, you should analyze its parts ________.