| Color is very important to most animals
for it helps them to get along in the world. Color (21) to
make an animal difficult for its enemies to (22) . Many
animals match their (23) so well that as long as they do not
move no one is (24) to see them. You probably have often
"jumped" a rabbit. If you (25) , you know how the rabbit
sits perfectly still (26) you are just a few feet
away. You (27) see the rabbit till it runs for its
(28) matches very closely the place where it is
(29) . Many times you may have walked past a rabbit
(30) didn’t run and you never knew it was there at
all. One of the most usual color schemes that helps animals to keep (31) being seen, is a dark back and light underpants. If an animal is the same color all (32) , there is always a A. surface B. coat C. shape D. appearance [单选题]计轴机柜电源输入端子排是以下哪一个（ ）。
A.TB-A B.TB-B C.TB-C D.TB-D [填空题]Mother’s Day is a (11) for mothers. The first Mother’s Day was held on May 10, 1908. It was celebrated first in America and England. In a short time, it became widely (12) . Mother’s Day is on the second Sunday in May. On that day, many people send gifts to their mothers. Those whose mothers are still living often wear a pink carnation (康乃馨) or (13) , while those whose mothers are dead wear a white one.
In China, people do the same on the day for mothers. And in some cities, people (14) ask a song to be sent for his or her mother. This might cost a little money, but they think love is the (15) . [多项选择]行政行为生效的前提条件是行政行为的成立，则一般行政行为的生效规则是（）。
A. 即时生效 B. 受领生效 C. 无条件生效 D. 变更生效 E. 告知生效 [单选题]变压器的一、二次电压一般允许有( )的差值,超过则可能在两台变压器绕组中产生环流,影响出力,甚至可能烧坏变压器。
A.±0.5% B.±1% C.±1.5% [单选题]容器的公称直径是指容器（ ）。
A.内径 B.外径 C.中径 D.标准直径 [单项选择]下列分析方法不属于卤素测定的是( )。
A. 凯达尔法 B. 卡里乌斯封管法 C. 氧瓶燃烧法 D. 过氧化钠分解法 [简答题]滤纸的规格和用途有哪些？
[单项选择]下列80x86指令系统的寻址方式中，存取操作数的速度哪一种最快？
A. 存储器直接寻址 B. 寄存器寻址 C. 寄存器间接寻址 D. 寄存器相对寻址 [单项选择]英译汉：“quality；quantity”，正确的翻译为( )
A. 质量；重量 B. 数量：重量 C. 质量；数量 D. 数量；质量 [判断题]变电站发生故障时，应优先恢复接触网、车站一类负荷的供电。
A.正确 B.错误 我来回答: 提交
|
