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【判断题】
火焰原子化器最常用的火焰是空气-乙炔火焰,可用于金、银、铜、铁、铝等金属的测定。(    )
A.
正确
B.
错误
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举一反三
【判断题】The basal layer of the epidemis contains special cells called melanocytes, which contains a blac k pigment called melanin.
A.
正确
B.
错误
【多选题】解决台湾问题、实现祖国完全统一,是全体中华儿女的共同愿望。( )是我们解决台湾问题的基本方针。
A.
九二共识
B.
和平统一
C.
一国两制
D.
反对台独
【简答题】什么是荷载效应组合?有地震作用组合和无地震作用组合表达式是什么?
【单选题】Which layer of the epidermis contains special cells called melanocytes.
A.
stratum basale
B.
stratum granulosum
C.
stratum lucidum
D.
stratum corneum
【单选题】The policemen _____ the murderer. [     ]
A.
are still searching
B.
are searching still
C.
still search
D.
search still
【简答题】( ) The sun negatively affects special cells that protect the body. This is erous because those cells are very important to the immune system, and they fight infections.
【单选题】比 大,比 小的分母是10的最简分数有 [     ]
A.
1个
B.
4个
C.
6个
D.
无数个
【简答题】大圆半径是6厘米,小圆的半径是4厘米,大圆的周长与小圆周长的最简整数比是______,大圆面积与小圆面积的最简整数比是______.
【单选题】The basal layer also contains special cells called_______, which produce black pigment that gives color to the skin.
A.
adipocyte
B.
epithelium
C.
keratin
D.
melanocytes
【单选题】The firemen were ______ the lost people. [     ]
A.
looking
B.
searching
C.
searching for
D.
finding
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