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【单选题】
该环 境问题对该地区可能造成的影 响是
A.
影响南水北调东线工程的安全
B.
影响京广铁路线等重要交通线路的安全
C.
提高了河流的泄洪能力使得可利用的水资源减少
D.
该地的降水增加形成涝灾
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皮皮学刷刷变学霸
举一反三
【单选题】在氢氧化钠、盐酸、氨水溶液中都能溶解的是
A.
HgO
B.
Zn(OH) 2
C.
Ag 2 O
D.
Cd(OH) 2
【单选题】Luckily some friends living locally came to visit me regularly and I went home every weekend, or I________mad.
A.
was going
B.
would have gone
C.
would go
D.
had gone
【单选题】. Yesterday I missed my feet on the stairs and had a bad fall. Luckily it was nothing serious ___.
A.
however
B.
therefore
C.
also
D.
though
【简答题】如图所示为液相传质的三种形式,请分别写出a为________________;b为____________;c为_____________。
【单选题】题目4. 往复式压缩机产生排气量不够的原因( )。
A.
吸入气体过脏
B.
安全阀不严
C.
气缸内有水
D.
冷却水量不够
【简答题】请写出液相传质的三种形式
【单选题】I dropped my keys in the grass, but luckily Kate _______ them.
A.
spotted
B.
wept
C.
removed
D.
looked
【简答题】指出上图中的错误
【单选题】I got up late, _______ I didn't have breakfast. _______luckily I caught the first bus. [     ]
A.
but, And
B.
but, So
C.
and, And
D.
so, But
【简答题】下图是实验室制取二氧化碳的装置图: ⑴ 指出图中有关仪器的名称:a________;b_______ ⑵ 指出图中错误的地方并加以改正: ①  ______________________________ ②  ______________________________ ③  ______________________________
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