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【简答题】
用98%的浓硫酸（其密度为1.84g/cm 3 ）配制100mL 1.0mol?L -1 稀硫酸，若实验仪器有： A 100mL量筒 B玻璃棒 C 50mL容量瓶 D 10mL量筒 E 胶头滴管 F 50mL烧杯 G 100mL容量瓶 （1）需量取浓硫酸的体积为______mL； （2）实验时不选用的仪器有（填序号）______； （3）配制过程中，下列情况会使配制结果偏高的是（填序号）______ ①俯视刻度线观察液面 ②容量瓶使用干燥 ③后经振荡、摇匀、静置，发现液面低于刻度线，再加蒸馏水补至刻度线 ④浓硫酸在烧杯中稀释后未冷却到室温就转移到容量瓶中 （4）在容量瓶使用方法中，下列操作不正确的是（填序号）______ A．使用容量瓶前检查它是否漏水 B．容量瓶用蒸馏水洗净后，再用待配液润洗 C．后塞好瓶塞，用食指顶住瓶塞，用另一只手的手指托住瓶底，把容量瓶倒转摇匀 D．将准确量取的18.4mol?L -1 的硫酸，注入已30mL水的100mL的容量瓶中，加水至刻度线．
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【简答题】What foreign language should the personnel manager speak fluently?
【多选题】小学儿童思维的基本特点有?
A.
逐步过渡到以抽象逻辑思维为主要形式，但仍带有很大的具体性。
B.
由具体形象思维到抽象逻辑思维的过渡存在明显的关键期
C.
思维结构趋于完整，但有待完善
D.
思维发展过程具有不平衡性
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【简答题】What does the company desire to do? To establish ______ with foreign customers.
【单选题】What is the important function of' the foreign exchange market mentioned in the passage?
A.
Its main function is to reduce the risk of fluctuating exchange rates or a change in the parity of currencies.
B.
The foreign exchange market can protect the traders against loss through exchange rate fluctuations.
C.
The foreign exchange market is the mechanism through which foreign currencies are traded.
D.
The important function of the foreign exchange market is to uniform. the currency being traded and circulate the knowledge of price changes.
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A.
Foreign language skills are of vital importance.
B.
It's easier nowadays to learn a foreign language.
C.
People today are not proud of their native language.
D.
People's language skills are better than in the past.
【简答题】What is the major responsibility of the assistant manager? Dealing with foreign customers and orders______.
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