| Most of the animals have little
connection with animals of a different kind, unless they hunt them for food.
Sometimes, however, two kinds of animals come together in a partnership (伙伴关系)
which is good for both of them. You may see some birds sitting on the
backs of sheep. This is not because they want a ride, but because they find easy
food in the parasites (寄生虫) on sheep. The sheep allow the lairds to do so
because they move the cause of discomfort. So although they can live without
each other, they do better together. Sometimes an animal has a plant partner. The relationship develops until the two partners can not live without each other. This is so in the corals (珊瑚) of the sea. In their skins there are tiny plants which act as "dustmen", taking some of the waste products from the corals and giving in return oxygen which the A. they can eat its parasites B. they enjoy travelling with the sheep C. they depend on the sheep for existence D. they find the position most comfortable [判断题]运算放大器是一种高增益、高输入电阻、高输出电阻的放大器。 ( )
A.正确 B.错误 [多项选择]植酸可影响下列哪些营养素的吸收（）
A. 维生素A B. 维生素B1 C. 非血色素铁 D. 钙 E. 锌 [多选题]根据《吊装作业安全管理制度》要求，属于项目负责人职责的是（ ）
A.阻止无关人员进入工作区域 B. 随时处理作业过程中出现不符合问题，坚决停止作业 C.坚守岗位，不得脱岗，不做其他工作 D. 作业完成后会同作业人员、验收人员清理现场 [单项选择]当前世界渔业存在的最主要问题是（）。
A. 过度捕捞，兼捕渔获物和其废弃物，水域环境污染 B. 过度捕捞，捕捞与养殖产量不合理，水域环境污染 C. 渔业产量满足不了人们的需要，兼捕渔获物和其废弃物，水域环境污染 [判断题]在无线灯显调车时,自收到紧急停车信号后,如速度不为零则常用制动。( )
A.正确 B.错误 [判断题]在地质灾害现场救援时,要靠近远离山体的道路一侧行进。
A.正确 B.错误 [单项选择]下列关于胰液的叙述，正确的是
A. 胰液的pH值约为7.0 B. 其分泌主要受神经调节 C. 在非消化期几乎不分泌 D. 胰酶主要由小导管细胞分泌 [多选题]下列审计程序中,通常不宜使用审计抽样的有( )。
A.风险评估程序 B.实质性分析程序 C.对未留下运行轨迹的控制的运行有效性实施测试 D.对信息技术应用控制的运行有效性实施测试 [单项选择]常规软件生命周期不包括
A. 可行性分析 B. 需求分析 C. 运行与维护 D. 性能优化 [单项选择]Preliminary estimation puts the figure at around $ 110 billion, ____________ the $ 160 billion the President is struggling to get through the Congress.
A. in proportion to B. in reply to C. in relation to D. in contrast to [判断题]每一种氨基酸都有两种以上的密码子。（）
[简答题]
万物在传递中绵延不已，人类在传递中生生不息。技艺、经验可以传递，思想、感情可以传递…… [简答题]水澄膏功效与作用
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