速度是40km/h的运动物体可能是（ ） A．行人 B．卡车 C．飞机 D．人造

Kofi Annan says helping survivors of last week’ s earthquake and (1) . in the Indian Ocean is (2) . The United Nations secretary-general says countnes that have offered aid must (3) and provide it. The offers add up to around (4) dollars. Unitd Nations officials say (5) of that is needed during the next six months.
The concern about offers of international aid is (6) . For example, the earthquake in Bam, Iran, in (7) of 2003 killed more than (8) people. Countries and groups offered hundreds of millions of dollars (9) . The United Nations says it has (10) only about (11) dollars in aid received so far. Governments and organizations that offered help (12) that, however.
On (13) Mr. Annan met with world leaders in Jakarta, Indonesia to discuss aid for (14) . The leaders discussed and (15) the idea of (16) owed by affected nations. But the leaders did not say they would do so. Some said that (17) to survivors would be more helpful.
Representatives of (18) countries and international organizations attended the meeting in Jakarta. Officials say they will cooperate to develop (19) for the Indian Ocean and the (20) .

如图所示，A、B、C、D、E、F为匀强电场中一个正六边形的六个顶点，A、B、C三点的电势分别为1V、2V、6V，则下列说法中正确的是

A．D点的电势为7V

B．电荷量为1．0×10^-10C的正点电荷在D点的电势能为9．0×10^-10J

C．将电荷量为1．0×10^-10C的正点电荷从E点移到F点，电场力做的功为5．0×10^-10J

D．将电荷量为1．0×l0^-10C的负点电荷从F点移到A点，电荷的电势能减少了3．0×10^-10J

下列不属于口服用片剂的是（）

A.包衣片

B.泡腾片

C.舌下片

D.咀嚼片

E.缓释片

图示三种单自由度动力体系中，质量m均在杆件中点，各杆EI、l相同。其自振频率的大小排列次序为：（）

A.A.>B.>C.

B.C.>B.>A.

C.B.>A.>C.

D.A.>C.>B.

我国《建筑法》规定的建筑意外伤害保险属于( )。

A．强制保险

B．自愿保险

C．财产保险

D．责任保险