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【单选题】
革兰染色的步骤正确的是A.
、媒染、脱色、复染
B.
、复染、媒染、脱色
C.
、脱色、媒染、复染
D.
、脱色、复染、媒染
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反馈参考答案：
举一反三
【多选题】商业发票,在实际工作中简称为“发票”,商业发票是( )
A.
出口方向进口方开列的发货价目清单
B.
买卖双方记账的依据，也是进出口报关交税的总说明
C.
它是结汇单证中最重要的单据，能让有关当事人了解一笔交易的全貌
D.
其它单据都是以发票为依据的
【简答题】Copy of Tender/Copy of Bid
【简答题】语丝社”和“语丝文体”
【简答题】A．She was asked to call the chairman's wife. B．She was asked to make a copy of English final exam. C．She was asked to go to the chairman's wife's office. D．She was asked to retake the final exam.
【单选题】What did the woman get?
A.
A letter.
B.
A telephone call.
C.
A contract.
D.
A copy of the agenda.
【单选题】下列叙述正确的是（ ）
A.
NH 4 Cl只含共价键，所以它是共价化合物
B.
Al（OH） 3 是两性氢氧化物，所以它能溶解于盐酸或氨水中
C.
硅胶多孔，吸附水份能力强，所以常用作袋装食品的干燥剂
D.
元素周期表中氢原子半径最小，所以氢是最活泼的非金属元素
【简答题】A．She was asked to call the chairman's wife. B．She was asked to make a copy of English final exam. C．She was asked to go to the chairman's wife's office. D．She 4vas asked to retake the final exam.
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