The Tribal Law and Order Act is to
A. serve as a link between tribal and federal systems.
B. give tribes more power to govern the country.
C. provide more resources for tribal communities.
D. stimulate Native American population growth.
CRH380B型动车组司机室双针压力表的作用：显示()的风压。
A. 两个头车制动缸
B. 主风缸管和辅助风缸
C. 主风缸管和制动管
增溶剂的最适HLB值是
A. 13～18
B. 13～16
C. 8～16
D. 7～9
E. 3～8
W／O型乳化剂的HLB值
A. 3～8
B. 7～9
C. 8～16
D. 13～18
E. 0～20
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