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【简答题】
食品着色剂的染色力通常用来表示 _____ __ ,即 __ _____ 。
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举一反三
【简答题】The secretary worked late into the night, (prepare) ______a long speech for the president.
【单选题】将4gNaOH溶液溶解在10ml水里，然后稀释成1L溶液，从中取出10ml，这10ml溶液的物质的量浓度是 [ ]
A.
1mol·L -1
B.
0．1 mol·L -1
C.
0．01 mol·L -1
D.
10 mol·L -1
【单选题】The secretary worked late into the night ， a long speech for the president ．
A.
． to prepare
B.
． preparing
C.
． prepared
D.
． was prepared
【单选题】将4gNaOH溶解在10mL水中，然后稀释成1L溶液，从中取出10mL，这10mL溶液的物质的量浓度是（ ）
A.
1mol·L － 1
B.
0.1 mol·L － 1
C.
0.01 mol·L － 1
D.
10 mol·L － 1
【简答题】浴比为1:10则表示1克织物用( ) A 10ml染料母液 B 10ml水 C 10ml工作液 D 10 ml水和 10ml染液
【简答题】#incclude int i=0 i++
【单选题】The secretary worked late into the night, _______ a long speech for the international conference. [ ]
A.
to prepare
B.
prepared
C.
preparing
D.
was preparing
【简答题】In which century did William Harvery make his discovery about the circulation of the blood?
【单选题】The secretary worked late into the night.She was preparing a long speech for the manager.(改写成现在分词作状语)
A.
The secretary worked late into the night,preparing a long speech for the manager.
B.
The secretary working late into the night,She was preparing a long speech for the manager.
C.
The secretary worked late into the night,she preparing a long speech for the manager.
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