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【判断题】
示差分光光度法测得吸光度A值与试液的浓度减去参比溶液的浓度所得的差值成正比。A.
正确
B.
错误
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举一反三
【单选题】公立非营利组织和民间非营利组织的共同特征是( )。
A.
不具有社会管理职能，不以盈利为目的
B.
具有社会管理职能，不以盈利为目的
C.
税收收入是主要的收入来源
D.
捐赠收入是主要的收入来源
【单选题】Nowadays more and more young people are fond _____ playing tennis. [ ]
A.
on
B.
to
C.
in
D.
of
【单选题】寒冬季节备足防滑物品,避免雨雪天气滑倒摔伤。除按正常作业、设置防护措施的( )外,严禁不经跨线设施(天桥、地道、平过道)横越股道。
A.
客运人员
B.
工作人员
C.
乘务员
【单选题】Nowadays,a chess-playing computer can be programmed to ________
A.
function with complete data and beat the best players
B.
evaluate every possible move but may fail to give the right response each time
C.
give trillions of responses in a second to each possible move and win the game
D.
learn from chess-playing in the early stage and go on to win the game
【单选题】It is reported that nowadays more and more children _____ playing computer games.
A.
are addicted to
B.
are addicted with
C.
addiction to
D.
addiction with
【简答题】Nowadays, children are apt to spend a lot of time playing computer s. Many parents point out that computer s have little educational value, so children should be pred from computer s....
【简答题】分裂期愈伤组织的共同特征是什么？
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