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阅读理解。 Skin-diving is a new sport today. This sport takes you into a wonderful new world. It is like a visit to the moon! When you are under water, it is easy for you to climb big rocks, because you are no longer heavy. Here, under water, everything is blue and green. During the day, there is enough light. When fish swim nearby, you can catch them with your hands. When you have tanks of air on your back, you can stay in deep water for a long time. But you must be careful when you dive in deep water. To catch fish is one of the most interesting parts of this sport. Besides (而且), there are many uses for skin-diving. You can clean ships without taking them out of the water. You can get many things from the deep sea. Now you see that skin-diving is both useful and interesting. 1. Skin-diving will take you to _____. [     ] A. the moon B. be in danger C. mountains D. the deep sea 2. You can climb the big rocks under water because _____. [     ] A. you are stronger B. the fish nearby help you C. you are not as heavy as on land D. there is a lot of light 3. Under water, a skin-diver _____ in the daytimes. [     ] A. can see everything clearly B. can't see anything clearly C. can see nothing D. can see only fishes 4. With a tank of air on your back, you can _____. [     ] A. catch fish very easily B. stay under water for a long time C. be in safe place D. have more fun 5. Which of the following sentences is NOT true? [     ] A. Skin-diving is a new sport. B. Skin-diving is like visiting the moon. C. The only use of skin-diving is to have more fun. D. Skin-diving is both interesting and useful
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【简答题】气缸体—曲轴箱的结构形式一般有____、____和____。
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A.
膜片式
B.
电热式
C.
电磁式
D.
上三种均有
【单选题】没原核生物的肽链延伸过程的是:
A.
肽基转移酶
B.
鸟苷三磷酸
C.
mRNA
D.
甲酰甲硫氨酰-tRNA
【单选题】机油压力报警装置常见的类型是 ( )
A.
膜片式
B.
电热式
C.
电磁式
【单选题】机油压力报警装置常见的类型是 ( )
A.
膜片式
B.
电热式
C.
电磁式
D.
触点式
【单选题】下列除哪项外均可归属于阳证:
A.
面红目赤
B.
疼痛喜按
C.
心烦不宁
D.
脉数有力
E.
发热口苦
【单选题】被认为是中国最早的三位植物生理学家。
A.
钱崇澍、张珽和李继侗
B.
罗宗洛、汤佩松和殷宏章
C.
吴相钰、曹宗巽和阎龙飞
D.
汤玉玮、崔 徵 和娄成后
【单选题】被认为是中国最早的三位植物生理学家。
A.
汤玉玮、崔澄和娄成后
B.
罗宗洛、汤佩松和殷宏章
C.
钱崇澍、张珽和李继侗
D.
吴相钰、曹宗巽和闫龙飞
【简答题】机体的构造与( )、气缸结构形式和曲轴箱结构形式有关。
【判断题】所有自杀的人都是患有严重心理障碍的。
A.
正确
B.
错误
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