大型低速二冲程柴油机的活塞由以下部件组成()。Ⅰ.活塞头Ⅱ.活塞裙Ⅲ.活塞销Ⅳ.活塞杆Ⅴ.柔性螺栓Ⅵ.十字头
A. Ⅰ+Ⅱ+Ⅳ+Ⅴ
B. Ⅰ+Ⅲ+Ⅳ+Ⅵ
C. Ⅱ+Ⅲ+Ⅳ+Ⅵ
D. Ⅱ+Ⅲ+Ⅴ+Ⅵ
Lesson One Blank-filling-1(只填字母和数字,不留空格) 1. Cleared to _______2. report _______3. say again after ________4. verify over ________5. request direct ________
Lesson One Blank-filling-2 1. ________ do not acknowledge further transmissions2. _________ recleared flight level 3303. __________ monitor 121.6 for approach4. ___________check your transmitter5. ___________ confirm ETO ___(6)___ 25
Lesson One Blank-filling-3 PIL: _____ Control, BAW204, over _______ at 4500meters, estimating ________35CTL: Station calling Control, say again your callsign.