锰硅对于焊条钢芯来说是有害杂质。

东方日出，西方日落，社会在发展，生物在进化，都是不依人的意志为转移的客观规律。小李对此不以为然。他说，有的规律是可以改造的。人能改造一切，当然也能改造某些客观规律。比如价值规律不是乖乖地为精明的经营者服务了吗人不是把肆虐的洪水制住，而变害为利了吗
试问，以下哪项最为确切地揭示了小李上述议论中的错误( )

A．他过高地估计了人的力量。
B．他认为“人能改造一切”是武断的。
C．他混淆了“运用”与“改造”这两个概念。
D．洪水并没有都被彻底制服。
E．价值规律若被改造就不叫价值规律了。

人们在进行财务决策时，之所以选择低风险的方案，是因为低风险会带来高收益，而高风险的方案则往往收益偏低。 ( )

A

Little Tommy was doing very badly in math. His parents had tried everything—tutors (家庭教师), cards, special learning centers—in short, everything they could think of. Finally they took Tommy to a catholic (天主教) school.
After the first day, little Tommy came home with a very serious look on his face. He didn’t kiss his mother and say hello. Instead, he went straight to his room and started studying. Books and papers were spread (铺开) out all over the room and little Tommy was hard at work. His mother was surprised. She called him down to dinner and as soon as he finished eating, he went back to his room, without a word. In no time he was back hitting the books as hard as before. This went on for some time, day after day while the mother tried to understand what was happening.
Finally, little Tommy brought home his report card. He quietly put it on the table and went up to his room and hit the books. His room looked at it and to her surprise, little Tommy got an A in math. She could no longer hold her curiosity (好奇心). She went to his room and asked, "Son, what was it Was it the nuns (修女)"
Little Tommy looked at her and shook his head," No. "
"Well then," she asked again. "WHAT was it"
Little Tommy looked at her and said, "Well, on the first day of school, when I saw that man nailed (钉) to the plus sign (加号), I knew they weren’t joking. \

Why did Tommy’s parents send him to a catholic school ( )

A．Because he could eat well there.

B．Because he could earn more about nuns.

C．Because his parents wanted him to do better in his math.

D．Because his parents didn’t want him to learn math any mor

配备三名驾驶员的飞行机组，其中包含一名符合条件的资深副驾驶，并且为飞行机组提供了经局方批准的睡眠区，最长是飞行时间可以到（）小时。

A.、12

B、14

C、16

用友报表系统中，不属于账务取数函数的是( )。

A．QC( )

B．PTOTAL( )

C．FS( )

D．LFS( )