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【单选题】
在Fe(OH) 3 溶胶中加入K 2 SO 4 、NaC1、K 3 PO 4 电解质,使Fe(OH) 3 溶胶聚沉的能力从强到弱 的顺序为()A.
K 2 SO 4 >NaCl>K 3 PO 4
B.
K 3 PO 4 > K 2 SO 4 >NaCl
C.
NaCI2SO 4 3PO 4
D.
NaCl> K 2 SO 4 > K 3 PO 4
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【单选题】The UN is trying to ______ the world ________ hunger.
A.
rid; of
B.
get rid of; by
C.
be rid of ;by
D.
get rid; of
【简答题】在组织的纵向结构设计中药确定 _______ 和有效的________。
【单选题】The workers were resting with the machine ________.
A.
run
B.
running
C.
to run
D.
runs
【单选题】请您为成年人推荐一种有效的清除牙龈缘附近及龈沟内菌斑的刷牙方法
A.
水平刷牙法
B.
旋转刷牙法
C.
巴斯刷牙法
D.
改良的Stillman刷牙法
E.
Fones刷牙法
【单选题】All of the students were ______ by the ______ speech _______ by the leader.
A.
inspired; inspired; given
B.
inspired; inspiring; gives
C.
inspiring; inspired; given
D.
inspired; inspiring; given
【简答题】For which group of the workers were the health care costs the highest?
【单选题】The workers were so tired that they fell asleep where they ______without undressing.
A.
lying
B.
were lying
C.
lied
D.
were lain
【简答题】Relief workers were shocked by what they saw.
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