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【单选题】
下列叙述中，正确的是( )A.
氯化铝溶液中加入过量氨水反应实质是： Al 3 ＋ ＋3NH 3 ·H 2 O=Al(OH) 3 ↓＋3NH 4 +
B.
在加入铝粉能放出氢气的溶液中：K ＋ 、NH 4 + 、CO 3 2 — 、Cl － 一定能够大量共存
C.
镁铝合金既可完全溶于过量盐酸又可完全溶于过量NaOH溶液
D.
依据铝热反应原理，能发生反应：2Al＋3MgO 3Mg＋Al 2 O 3
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【单选题】The company turned a deaf ear to the workers’ _____ about their pay and working conditions.
A.
complaints
B.
application
C.
supplies
D.
consequences
【单选题】They ______ their neighbor of playing his radio too loudly.
A.
charged
B.
unsatisfied
C.
complained
D.
accused
【简答题】The last line in the poem “The Wild Honey le” is ______________.
【简答题】Please give some information about the dvelopment and changes of protected cultivation from 1980s to the present in China . 2、 Why can we assure that "greenhouse will almost certainly survive?" 3、 ...
【简答题】11 Please give some information about the dvelopment and changes of protected cultivation from 1980s to the present in China .
【单选题】What is the main image in The Wild Honey Suckle?
A.
Lily
B.
The Wild Honey Suckle
C.
Death
D.
Flowers
【简答题】集成运算放大器是一种采用多级直接耦合的高放大倍数的放大电路。它既能放大缓慢变化的 ,又能放大 。
【简答题】What are the causes of rapid growth of present-day English vocabulary? Will you please give some reasons?
【简答题】口算： 400÷2= 0×58= 120÷6= 0÷10= 30×22= 42×20= 600÷3÷2= 40×90= 68+0= 12×2×5=
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