如图所示，质量为m的小球，从离地面H高处从静止开始自由下落，落到地面后继续陷入泥

评标中的“评标价”是指( )。

A．标底价
B．投标价
C．中标的合同价
D．以价格为单位对各投标书优劣进行比较的量化值

You'd better leave           , because it's dangerous here. [ ]

A. as possible as you can

B. as quick as possible

C. as later as you can

D. as soon as possible

在夏季采集牛乳样品时，要把牛乳充满取样瓶的顶部，其目的是防止（）。

75Ω±20%的电阻值用色标表示为（）

A、紫绿黑

B、紫绿黑金

C、紫绿棕红

D、紫绿黑银