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【单选题】
静息电位的实测值小于K + 平衡电位的理论值,是由于静息时膜对A.
Na + 有小量的通透性
B.
Ca 2+ 有小量的通透性
C.
Mg 2+ 有小量的通透性
D.
Cl - 有小量的通透性
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举一反三
【单选题】A horizontal line 450mm long and 25mm wide cuts through the loadline disc. It is called the__.
A.
plimsoll disc
B.
plimsoll line
C.
the deck line
D.
summer load line
【判断题】纵断面高于水平线时取正值，低于水平线的面积取负值。The vertical section is positive when it is higher than the horizontal line, and the area below the horizontal line is negative.
A.
正确
B.
错误
【单选题】The angular movement of a vessel about a horizontal line drawn from its bow to its stern is （）.
A.
pitching
B.
rolling
C.
heaving
D.
swaying
【单选题】A horizontal line cuts through the loadline disc. It is called the _____.
A.
the deck line
B.
Plimsoll disc
C.
Plimsoll line
D.
summer load line
【单选题】A horizontal line 450-mm long and 25 mm wide cuts through the load line disc. It is called the ___.
A.
the deck line
B.
Plimsoll disc
C.
Plimsoll line
D.
summer load line
【简答题】A vertical angle is an angle in a vertical plane which referenced to a horizontal line by plus or minus angles, or to a vertical line from the zenith direction.
【判断题】A horizontal line is parallel to horizontal plane of projection, and inclined to the frontal plane of projection and profile plane of projection.
A.
正确
B.
错误
【单选题】A disk with a horizontal line through its center，equivalent to the summer load line，is called the（）.
A.
deadrise mark
B.
maximum allowable draft mark
C.
plimsoll mark
D.
tonnage mark
【单选题】A disk with a horizontal line through its center, equivalent to the summer load line, is called the（）.
A.
deadrise mark
B.
maximum alloable draft mark
C.
pilmsoll mark
D.
tonnage mark
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