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【单选题】
高频通信系统(HF COMM)中天线调谐耦合器的作用是()
A.
自动完成高频通信系统(HF COMM)的频率选择
B.
在所选择的频率上自动地使天线阻抗与发射机阻抗相匹配
C.
在飞行员初步选择好频率后,在对频率进行微调
D.
自动调节天线的长短,以满足所选频率的需要
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参考答案:
举一反三
【简答题】汉译英 汉:提供,英:______ v. 。
【单选题】—My baby has a heart trouble.
A.
Did the doctor find it difficult _____?
B.
in treating
C.
treating
D.
for treating
E.
to treat
【简答题】进行下列标定时 , 欲使滴定剂消耗约 25mL , 需称取各基准物质的量为 : ( 1 ) m (KHC 8 H 4 O 4 )___________ g , 用来标定 0.20 mol / L KOH 溶液 ; ( 2 ) m (K 2 Cr 2 O 7 )___________ g , 用来标定 0.10 mol / L Na 2 S 2 O 3 溶液 ; ( 3 ) m (Na 2 CO 3...
【单选题】She put a blanket over the baby for fear that he ____________cold.
A.
caught
B.
has caught
C.
catches
D.
should catch
【单选题】Escrow Service与Paypal不同之处在于其收款流程为【此题为单选】 ( )。
A.
确认订单-买家付款-卖家收款-卖家发货-买家收货
B.
确认订单-卖家发货-买家付款-卖家收款-买家收货
C.
确认订单-卖家发货-买家收货-买家付款-卖家收款
D.
确认订单-买家付款-卖家发货-买家收货-卖家收款
【简答题】近代意义的宪法是()革命的产物。
【单选题】As soon as he had the light, the baby changed back into Raven.
A.
Immediately after he had the light, the baby changed back into Raven.
B.
The baby stopped crying as soon as he got the light and turned back into Raven using magic.
C.
The baby turned back into Raven immediately after he got the light.
D.
The baby changed back into Raven as soon as he had the light, which surprised everyone.
【简答题】提供 ________(汉译英)
【单选题】Escrow Service与Paypal不同之处在于其收款流程为____。
A.
确认订单-买家付款-卖家收款-卖家发货-买家收货
B.
确认订单-卖家发货-买家付款-卖家收款-买家收货
C.
确认订单-卖家发货-买家收货-买家付款-卖家收款
D.
确认订单-买家付款-卖家发货-买家收货-卖家收款
【简答题】(汉译英)我不知道他是否能够提供有力的证据。
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