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【单选题】
质量为m的物体放在质量为M、倾角为θ的斜面体上，斜面体置于粗糙的水平地面上，用平行于斜面的力F拉物体m使其沿斜面向下匀速运动，M始终静止，则下列说法正确的是（）A.
M相对地面有运动的趋势
B.
地面对M的支持力为（M+m）g
C.
地面对M的摩擦力大小为Fcosθ
D.
物体m对M的作用力的大小为mg
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【单选题】C2. The Daily Recorder is trying to decide whether it will fire about 200 employees if things don't change in the near future. The paper is scheduling a meeting with the 200 employees. The employees w...
A.
Family members are internal stakeholders, so they should have a separate meeting with the paper without the employees.
B.
Family members are internal stakeholders, but they not should be allowed to attend the meeting.
C.
Family members are external stakeholders, so they should be allowed to attend the meeting.
D.
Family members are not stakeholders, so they should not be allowed to attend the meeting.
【简答题】特殊类型的消化性溃疡包括哪些？
【简答题】To my joy,everyone agreed with my proposals at the meeting.
【简答题】消化性溃疡包括 _________ 和 _________ ,胃溃疡好发于 _________ ,十二指肠溃疡好发于 _________ ,溃疡腹痛特点包括 _________ 、 _________ 、 _________ ,周期性特点为 _________ ,节律性腹痛特点为胃溃疡 _________ ,十二指肠溃疡为 _________ 。
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