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【多选题】
下面哪些措施可以提高梁的强度?A.
同等面积情况下选择抗弯截面模量大的截面
B.
根据材料特性选择截面形状
C.
采用变截面等强度梁
D.
减小跨度
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【简答题】点蜡的共同点是不论大小、繁简、都只有 [填空(1)] ，真是成竹在胸，信手拈来，皆成妙品。A. 腹稿
【简答题】how do you maintain emergency battery ?
【单选题】Which statement is not true regarding the SART battery replacement routine?
A.
The battery must be replaced before the end of the 30 day “grace-period” after the expiration date specified on the battery.
B.
The manufacturer may provide O-rings， grease， etc to be utilized as part of the battery replacement routine.
C.
The battery must be replaced prior to the expiration date indicated on the SART.
D.
any damage to the SART or its container should be noted and corrected immediately or， of noted at-sea， be corrected at the next port.
【单选题】Drive battery is a high-output battery that stores electricity generated from ( ).
A.
regenerative braking
B.
generator
C.
battery pack
D.
electric motor
【简答题】点蜡的共同点是不论大小、繁简、都只有___真是成竹在胸,信手拈来,皆成妙品。
【多选题】What's true about the battery ?
A.
a lead_acid storage battery
B.
an electrochemical device
C.
supply current to the engine
D.
act as an electrical reservoir
【单选题】Which of the following would be the correct way to dispose of a laptop battery？ （）
A.
Place the battery on a shelf for storage.
B.
Place the battery in a trash compactor separately from the laptop.
C.
Dispose of the battery in the same manner as the laptop.
D.
Refer to the disposal information located on the battery.
【多选题】下列有关物权变动的表述，正确的有______
A.
甲将其自行车出租给乙后，又将自行车出卖给乙，则物权变动自该自行车买卖合同成立之日起生效
B.
丙将自己的电脑交给丁有偿保管，后丙将电脑卖给戊，如果丙近期未支付保管费，则丁享有的留置权可以对抗戊的电脑返还请求权
C.
己将房屋出卖给其朋友，则该买卖合同自办理房屋登记过户时起发生效力
D.
庚将自己的照相机卖给辛，在照相机没有交付给辛前，庚又在该照相机上设定了清偿本人债务的抵押权，则该设定抵押权的行为无效。
【多选题】下列有关物权变动的表述，正确的有( )。
A.
甲将其自行车出租给乙后，又将自行车出卖给乙，则该自行车买卖合同自合同成立之日起生效
B.
丙将自己的电脑交给丁有偿保管，后丙将电脑卖给戊，如果丙未按期支付保管费，则丁享有的留置权可以对抗戊的电脑返还请求权
C.
己将房屋出卖给其朋友，则该买卖合同自办理房屋登记过户时起发生效力
D.
庚将自己的照相机卖给辛，在照相机没有交付给辛前，庚又在该照相机上设定了清偿本人债务的抵押权，则该设定抵押权的行为无效
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