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【多选题】
险与商业三者险相比,有哪些不同 ( )A.
强制性不同
B.
不同
C.
内容不同
D.
险单独保单，独立核算
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举一反三
【单选题】The people in the office suddenly started working because________.
A.
they saw a stranger in the office
B.
their morning break was ended
C.
no one wanted to talk to Marie
D.
the boss was about to arrive
【简答题】主要用于注射用灭菌粉末的溶剂或注射液的稀释剂
【单选题】The people in the office suddenly started working because ______.
A.
they saw a stranger in the office
B.
they had finished their morning break
C.
no one wanted to talk to Marie
D.
the boss was about to arrive
【多选题】关于循环群,下列说法正确的是( )。
A.
循环群＜a＞是交换群，即循环群中必有a^i乘以a^j等于a^j乘以a^i，其中i，j∈Z。
B.
循环群＜a＞中的元素都是a的方幂的形式。
C.
循环群＜a＞中，a的一个方幂是生成元当且仅当a的这个方幂的阶等于a的阶。
D.
若G为群，a∈G，a的阶等于7，则a生成的循环群＜a＞的阶也等于7。
【单选题】设G是群，e是单位元，a，b，c∈G，则下面关于群的性质描述错误的是
A.
若ab=b，则必有a=e
B.
若b≠c，有可能ab=ac
C.
G有唯一的幂等元
D.
aG=Ga
【单选题】Music is , and I like my music teacher, too. He’s .
A.
interesting; fun
B.
boring; tall
C.
difficult; old
【简答题】The people in the office suddenly started working because______. [A] they saw a stranger in the office [B] their morning break was ended [C] no one wanted to talk to Made [D] the boss was about to arr...
【单选题】Neither my father nor my mother ______ rock music. They think that it's too ______. [ ]
A.
like; noise
B.
likes; noise
C.
like; noisy
D.
likes; noisy
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