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【单选题】
研究人员培育了一种称为“裸鼠”的实验动物，这种鼠缺少胸腺，其免疫功能不表现为 [ ]A.
体内淋巴细胞的种类减少
B.
体液免疫功能维持正常
C.
进入体内的细菌仍能被裂解
D.
机体仍能产生效应B细胞
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【单选题】He's a waiter. He works in a _____ . [ ]
A.
post office
B.
bank
C.
restaurant
D.
supermarket
【单选题】He was a friendly waiter. He spoke to the writer_______
A.
friend
B.
as friends
C.
like friends
D.
in a friendly way
【单选题】听力原文： I see that you all made it back to continue your training. We plan to walk you through customer service calls today. Marsha will be instructing you on how to deal with irate customers. We will b...
A.
A speech by the CEO.
B.
A review of employee perks.
C.
A review of company policies.
D.
A training session on how to handle calls.
【单选题】B Jim was a waiter． He liked to grow flowers in his garden when he was free． One Sunday morning after breakfast he put on his old clothes and began digging(挖) in his garden at 8． He dug and dug． Half ...
A.
flowers
B.
coins
C.
people
D.
trees
【简答题】He was a friendly waiter. He spoke
to the writer ___.A. friend B. as friends C. like friends D. in a friendly way
【单选题】氢化可的松因保管不当, C17-α- 醇酮基有部分被分解,欲测定未被分解的氢化可的松的含量应采用( )
A.
三氯化铁比色法
B.
紫外分光光度法
C.
异烟肼比色法
D.
四氮唑比色法
【单选题】狭水道内航行采用安全航速是指:
A.
备车航速
B.
地方限速
C.
前进三变为前进一
D.
能够采取适当而有效的行动避免碰撞并能在适合当时环境和情况的距离内把船停住的速度
【单选题】氢化可的松因保管不当,C17-α-醇酮基有部分被分解,欲测定未被分解的氢化可的松的含量应采用
A.
三氯化铁比色法
B.
紫外分光光度法
C.
异烟肼比色法
D.
四氮唑比色法
E.
酸性染料比色法
【单选题】狭水道内航行采用的安全航速是指 。
A.
备车航速
B.
地方限速
C.
前进三变为前进一
D.
能够采取适当而有效的行动避免碰撞并能在适合当时环境和情况的距离内把船停住的速度
【单选题】狭水道内航行采用安全航速是指:
A.
备车航速
B.
地方限速
C.
前进三变为前进一
D.
能够采取通当而有效的行动避免碰撞并能在适合当时环境和情况的距离内把船停住的速度
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