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【单选题】
When two power-driven vessels are meeting head-on and there is a risk of collision, each shall ________.A.
A．stop her engines
B.
alter course to starboard
C.
sound the danger signal
D.
back down
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举一反三
【单选题】宽度均为b,基底附加应力均为p0的基础,同一深度处,附加应力数值最大的是:
A.
方形基础
B.
矩形基础
C.
2. 正确答案：（C） 提示：宽度、基底附加应力相同的基础，长度越大，影响深度越大；在深度相同时，长度越大的基础，附加应力数值越大。
D.
圆形基础（b为直径）
【单选题】前列腺增生症，残余尿过多，使膀胱失去收缩能力，膀胱过度膨胀，尿不自主从尿道口充出，称为（ ）。
A.
压力性尿失禁
B.
充盈性尿失禁
C.
急迫性尿失禁
D.
真性尿失禁
E.
尿淋沥
【单选题】In the study of functional syntax, Halliday defines his ______ as 'tile one to whom or for whom the process is said to take place', which is also called Recipient in material processes, Client in verb...
A.
range
B.
circumstances
C.
beneficiary
D.
token
【单选题】In the study of functional syntax, Halliday defines his ______ as 'the one to whom or for whom the process is said to take place', which is also called Recipient in material processes, Client in verba...
A.
range
B.
circumstances
C.
beneficiary
D.
token
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