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【单选题】
自动舵比例调节旋钮（舵角调节）的调节方法是：（） ①、重载时调大些； ②、轻载时调大些； ③、部分舵叶露出水面时些； ④、海况恶劣时调大些A.
①、③、④
B.
②、③、④
C.
①、③
D.
②、④
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举一反三
【单选题】Robert Owen tried to develop ________ to improve the workplace conditions in factories.
A.
managerial scheduling methods
B.
the idealistic workplace
C.
general administrative theory
D.
industrial psychology
【简答题】简述什么是全科医生,以及全科医生面对患者时所扮演的角色。
【单选题】按照生物安全实验室选用生物安全柜的原则,二级实验室一般不选择( )
A.
Ⅰ级生物安全柜
B.
Ⅱ级A1型生物安全柜
C.
Ⅱ级B1型生物安全柜
D.
Ⅱ级B2型生物安全柜
E.
可以不使用生物安全柜
【简答题】Robert Owen was born in Wales in 1771. At the age of ten he went to work. His employer had a largePrivate library so Owen was able to educate himself. He read a lot in his spare time and at nine h...
【简答题】阅读理解。 Robert Owen was born in Wales in 1771. At the age of ten he went to work. His employer had a large Private library, so Owen was able to educate himself. He read a lot in his spare time and at ni...
【简答题】Robert Owen was born in Wales in 1771. At the age of ten he went to work. His employer had a large private library so Owen was able to educate himself. He read a lot in his spare time and at nine ...
【简答题】根据爱因斯坦质能公式( )质量具有能量,把这一关系式代入牛顿引力公式,可得两静止质子之间的引力和二者的能量 成正比。(1)一个质子的静止能量是多少GeV?(2)在现实世界中,两静止质子之间的电力要比引力大到 倍,要使二者间的引力等于电力,质子的能量需要达到多少GeV?这能量是现今粒子加速器(包括在建的)的能量范围( GeV)的多少倍?
【单选题】下列关于元素与原子关系的叙述中，正确的是（ ）
A.
元素是原子的一个归类“集体”
B.
同种元素的原子结构和质量完全相同
C.
元素的种类取决于该元素原子的核外电子数
D.
不同种元素的根本区别是核内中子数不同
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