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【单选题】
日本血吸虫主要致病的生活史阶段是()
A.
虫卵
B.
毛蚴
C.
尾蚴
D.
E.
成虫
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【单选题】通常规定:电源容量在180千伏安以上,电动机容量在()以下的三相异步电动机就可采用直接起动。
A.
5千瓦
B.
7瓦
C.
7千瓦
D.
70千瓦
【判断题】乳果糖对糖尿病患者慎用;对有乳酸血症患者禁用;
A.
正确
B.
错误
【判断题】若力的功值只与物体的始末位置有关而与具体路径无关,或者说在力作用下的物体沿任意路径绕行一周时,它们的功值均为零,我们把这种性质的力称为保守力。
A.
正确
B.
错误
【简答题】--Have you _____ the invitation to the party? --Yes, I have. And I've ______ it. A.accepted, received B.received, accepted C.received, received D.accepted, accepted
【单选题】容量在180千伏安以上的电源,7.5千瓦以下的电机都允许()启动。
A.
直接
B.
间接
C.
连续
【单选题】_____ your letter, I would have written back two days ago. [     ]
A.
If I received
B.
Should I received
C.
Had I received
D.
If I could have received
【多选题】从行动阶段向保持阶段过渡时,哪些“改变过程”在扮演重要角色?
A.
意识唤醒
B.
刺激控制
C.
自我重评
D.
强化管理
【单选题】I have received an offer from a German university, but I’m still hesitating ______ I should accept it.
A.
how
B.
why
C.
that
D.
whether
【单选题】通常规定:电源容量在180千伏安以上,电动机容量在7.5千瓦以下的三相异步电动机可采用()启动。
A.
降压
B.
直接
C.
调速
D.
以上三种
【单选题】Choose the correct verbs: 2. The education that I ( has received, have received ) here ( is, are ) really helpful.
A.
has received / is
B.
has received / are
C.
have received / is
D.
have received / are
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