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【单选题】
What is the purpose of cant frames in steel vessels ().A.
To support the overhang of the stern
B.
To provide strength to shell plating at the stern
C.
To add strength to the deck beams which support the weather decks
D.
To support the plating of a cylindrical tank
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【单选题】There will be an important English lecture at 14:30 this Sunday afternoon. (就划线部分提问)
A.
When will there be an important English lecture this Sunday afternoon?
B.
What time will there be an important English lecture this Sunday afternoon?
C.
What time is there an important English lecture this Sunday afternoon?
【单选题】There will be an important English lecture at 14:30 this Sunday afternoon. (就划线部分提问)
A.
When will there be an important English lecture this Sunday afternoon?
B.
What time will there be an important English lecture this Sunday afternoon?
C.
What time is there an important English lecture this Sunday afternoon?
【单选题】林 ( lín ) 娜 ( nà ) 的 ( de ) 自行车 ( zìxíngchē ) 钥 ( yào ) 匙 ( shi ) 在 ( zài ) 哪儿 ( nǎer ) ?
A.
书 ( shū ) 包 ( bāo ) 里 ( lǐ
B.
衣服 ( yīfu ) 口 ( kǒu ) 袋 ( dài ) 里 ( lǐ
C.
桌子 ( zhuōzǐ ) 上 ( shàng
D.
在 ( zài ) 自行车 ( zìxíngchē ) 上 ( shàng
【简答题】计算0．1mol.L-1K2HPO4、KH2PO4、K3PO4溶液的pH。 (2)计算KH2PO4和等体积、等物质的量K。PO。混合液的pH。
【单选题】HPO 4 2- 的共轭碱是 -------( ) (A) H 2 PO 4- (B) H 3 PO 4 (C)PO 4 3- (D) OH -
A.
H2PO4-
B.
H3PO4
C.
PO43-
D.
OH-
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