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【单选题】
构成淋巴小结的细胞主要是A.
浆细胞
B.
B细胞
C.
网状细胞
D.
T细胞
E.
巨噬细胞
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皮皮学刷刷变学霸
举一反三
【多选题】Which of the followings are the traditional activities on Winter Solstice in Southern China?
A.
Making winter solstice rice ball
B.
Drying winter rice
C.
Playing "Dagang" game
D.
Making antithetical couplets
【简答题】电子支付的概念,简述其类型?
【单选题】--You've done this before, right?--No, but if we follow the directions, we ______ have any trouble.
A.
needn't
B.
mustn't
C.
shouldn't
D.
couldn't
【简答题】We were told that we should follow the main road______we reached the central rail- way station. [A] whenever [B] until [C] while [D] wherever
【简答题】We are supposed __ (follow) the teachers9 instructions,
【简答题】数控程序中圆弧圆心角 ≤180°半径的数值为___,圆弧圆心角>180°半径的数值为___,整圆只能用I、J、K方式。
【单选题】下列配制溶液的方法中,不正确的是 ( )。
A.
氯化亚锡 溶液：将 氯化亚锡 溶于稀盐酸后加入锡粒
B.
硫酸亚铁 溶液：将 硫酸亚铁 溶于稀硫酸后放入铁钉
C.
硝酸汞 溶液：将 硝酸汞 溶于稀硝酸后加入少量 Hg
D.
氯化铁 溶液：将 氯化铁 溶于稀盐酸
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