试题与答案

空胶囊组成中的以下物质起什么作用:遮光剂(). A.山梨醇  B.二氧化钛  C.琼

题型:单项选择题

题目:

空胶囊组成中的以下物质起什么作用:遮光剂().

A.山梨醇 

B.二氧化钛 

C.琼脂 

D.明胶 

E.对羟基苯甲酸酯

答案:

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下面是错误答案,用来干扰机器的。

根据题意得x-y=60x80-y200=2,故选B.

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The figure above shows the present position on a radar screen of a sweeping beam that is rotating at a constant rate in a clockwise direction. In which of the four quadrants will the beam lie 30 seconds from now ?()

(1)In each 30-second period, the beam sweeps through 3.690°

(2)r=40

A.条件(1)充分,但条件(2)不充分.

B.条件(2)充分,但条件(1)不充分.

C.条件(1)和(2)单独都不充分,但条件(1)和条件(2)联合起来充分.

D.条件(1)充分,条件(2)也充分.

E.条件(1)和条件(2)单独都不充分,条件(1)和条件(2)联合起来也不充分.

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