DF4B型内燃机车流经燃油预热器的冷却水靠()输送。
A、预热水泵
B、高温水泵
C、低温水泵
D、自然水压差
参考答案:B
根据书信内容判断下列句子的正误,正确的用"A,错误的用"B.
Dear Susan,
My birthday is coming this Saturday. We're going to have a birthday party at home in the evening. Many of my friends are coming. We'd also like you to come. Could you come? Please tell me.
From:
Linda King
21 Chang'an Road
Xi'an
To:Susan Great
32 Jiefang Road
( )1.Susan's birthday is on Saturday
( ) 2. This is a postcard from Susan to Linda.
( ) 3. Suan wants Linda to come to the party.
( )4. The birthday party is going to be held(举行) on Saturday morning.
( ) 5. Susan lives in Xi'an.
以下对药理学概念的叙述哪一项是正确的()
A、是研究药物与机体间相互作用规律及其原理的科学
B、药理学又名药物治疗学
C、药理学是临床药理学的简称
D、阐明机体对药物的作用
E、是研究药物代谢的科学