将-8-(-3)+7-(+2)写成省略括号的形式正确的是[ ] A.-8+3+7

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问题:

将-8-(-3)+7-(+2)写成省略括号的形式正确的是[ ]

A.-8+3+7-2

B.8+3+7-2

C.-8-3+7-2

D.8+3+7+2

考点:有理数的加减混合运算
题型:选择题

男性患者,28岁,经去骨、劈开挺出右下近中阻生智齿。4天后出现持续性剧痛,并向耳颞部放散,检查见拔牙窝空虚,牙槽骨壁表面有灰白色假膜覆盖。最可能的诊断是

A.牙槽突骨折

B.拔牙后肿胀反应

C.干槽症

D.邻牙在拔牙时受到损伤

E.邻牙急性根尖炎

题型:选择题

国际贸易适用的法律体系包括( )。

A.适用合同当事人所在国国内的有关法律

B.适用合同出口国的有关法律

C.适用合同进口国的有关法律

D.适用有关的国际协定、条约或合约

E.适用各国的有关法律

题型:选择题

有关固定义齿悬空式桥体的描述不正确的是().

A.口感差

B.适合各种固定桥修复

C.龈面应高度抛光

D.桥体应具有一定良好的机械性能

E.龈面与牙槽嵴粘膜间至少留有3mm以上间隙

题型:选择题

The relative decline of American education at the elementary-and high-school levels has long been a national embarrassment as well as a threat to the nation’s future. Once upon a time, American students tested better than any other students in the world. Now, ranked against European schoolchildren, America does about as well as Poland, behind at least 10 other nations. Within the United States, the achievement gap between white students and poor and minority students stubbornly persists.
For much of the last half century professional educators believed that if they could only find the right pedagogy, the right method of instruction, all would be well. Yet in recent years researchers have discovered something that may seem obvious, but for many reasons was overlooked or denied. What really makes a difference, what matters more than the class size or the textbook, the teaching method or the technology, is the quality of the teacher. Much of the ability to teach is innate-an ability to inspire young minds as well as control unruly classrooms that some people instinctively possess and some people definitely do not.

题型:选择题

轴承进油分配不均匀可能导致个别轴瓦回油温度()。

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